Marcus Lefton (@marcuswlefton) header
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Private Performance Advisor for Founders and Elite Athletes Read Free: Mastery in Motion ๐Ÿ‘‡

Joined February 2026
Photo by Marcus Lefton (@marcuswlefton)Photo by Marcus Lefton (@marcuswlefton)Photo by Marcus Lefton (@marcuswlefton)Photo by Marcus Lefton (@marcuswlefton)Photo by Marcus Lefton (@marcuswlefton)Photo by Marcus Lefton (@marcuswlefton)Photo by Marcus Lefton (@marcuswlefton)Photo by Marcus Lefton (@marcuswlefton)Photo by Marcus Lefton (@marcuswlefton)
Iโ€™ve seen many people trying to build businesses with daily routines like this: 1. Wake up 2. Hit a hard workout 3. Go for a run 4. Wash up 5. Start work Their most crucial focus moments are spent on tasks that do absolutely nothing to get them to their goal. Donโ€™t get tricked by these โ€œuseful distractionsโ€ that arenโ€™t your north star. Focus on what gets you closer to your goal. Trust me, youโ€™ll have time for everything else after.
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Iโ€™ve said it once and Iโ€™ll say it again. One person companies are here to stay and everyone should be training and building like a founder-athlete.
Jake Paul reveals he built multiple AI assistants to help run his businesses and manage his entire life โ€œMy ranch in Georgia runs on a dashboard that I made, every project, every budget, every invoice on my phoneโ€ โ€œYou may think it's crazy or you're just lazy but you have to start setting your life up with AI assistants dashboardsโ€ โ€œThere's basically 10 of me out there scanning the whole entire world, knowing what's going on, reporting back to me, looking at messages, coming up with ideas, designing thingsโ€ โ€œI coded a whole entire dashboard. It's connected to my training, my caloric intake, how much rest, sleep, all of these things that I'm doing are all vertically integratedโ€ โ€œMy ranch dashboard I built for my team in Georgia, a personal CRM to manage relationships and locations of where people are and it's tracking my calendarโ€
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this is your friendly reminder to create the space for AI mastery. only way to keep up with the change. Build superhuman energy and capacity. Direct towards building leverage.
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High performance looks a different than many people realizeโ€ฆ No reason it canโ€™t be fun too.
The Brewers regarded smoking cigarettes before games as a good luck charm and their motto was โ€˜if we smoke heaters in the cage, we will smoke heaters in the gameโ€™ Christian Yelich on this: โ€œYou walk by the cage and see the cigs lit and youโ€™re like, the boys are ready to rock.โ€ (Via @JeffPassan)
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โ€œI don't have an editor.โ€ That used to be a reasonable excuse for not creating and distributing more content. But not anymore. AI can clean your audio, edit footage, generate clips, add captions, and help distribute your ideas. Great editors still add value. But you no longer need one to get started. Which creates an interesting shift. When everyone can produce more, production itself becomes less of an advantage. What becomes more valuable? Taste. Judgment. Interpretation. Your ability to see what others miss. Connect ideas others haven't connected. Develop perspectives earned through your own N-of-1 experiences. AI can turn one idea into 20 videos. But it can't live the experiences that make the idea worth sharing. And I think this extends far beyond content. You can automate tasks without knowing which ones matter. Increase your output without improving your results. Acquire extraordinary leverage and still direct it toward the wrong things. The tools are becoming more capable. But are we? Which brings me back to something I've been advocating: Train like a founder-athlete. Even if you aren't one. Not because everyone should start a company. (and certainly not to glorify working more) But because the skills required to build, adapt, perform, and live well are increasingly valuable everywhere. Think about the person you could become if you intentionally trained four things: 1. Build extraordinary capacity. Train your physiology, cognition, emotional regulation, and recovery. Develop the energy and resilience to do difficult things sustainably. 2. Direct that capacity. Train attention, judgment, focus, and decision-making. Know what deserves your best energy and what doesn't deserve any. 3. Multiply that capacity. Acquire leverage through AI, sales, marketing, storytelling, distribution, delegation, and systems. Increase your impact without proportionally increasing your effort. 4. Iterate toward your ideal. Experiment. Measure. Learn. Adapt. Develop your own N-of-1 playbook for performing better and living well. Now imagine the compound effect. You can think clearly under pressure. Make consequential decisions with confidence. Turn ideas into things people value. Communicate so people listen. Adapt when circumstances change. And still have the energy to be fully present for the people and experiences that matter most. These aren't superpowers reserved for a select few. They're skills you can deliberately train. Not all at once. Not to become exceptional at everything. But to become increasingly capable of solving whatever stands between you and your next meaningful result. Here's your next expirement: Identify the ONE skill currently limiting your next important result. Not the tool you're missing. The skill you haven't trained. Then start practicing it with the same intention you'd bring to developing a physical skill. Because going into 2027, access to powerful tools will become increasingly common. The real advantage will be the person you've trained yourself to become.
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Individual flow is great. But team macro flow is tough to beat. Team > Talent.
Brewers manager Pat Murphy to Jake Bauers after the World Series: โ€œYouโ€™re gonna be a rich fucker. Just remember when youโ€™re on that horse shit Yankee team and youโ€™re all playing for yourselvesโ€ฆ just remember this is way we used to do it.โ€
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The more capable you are, the longer a broken system can survive. The more capable you are, the longer a broken system can survive. I've seen this in professional baseball, applied flow science, and advising founders and executives. The biggest performance breakthroughs often start with identifying what you've become exceptionally good at compensating for. Here's how I find the constraint hiding behind the result โ†“
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You donโ€™t burn out from too much work. You burn out from too much switching.
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if you played baseball as a kid, posted content for years, and became an entrepreneur. Iโ€™d bet on you no matter what you do. Any guesses to why??
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Such an important video to watch. See this common response in all sports. His true ability did not unlock until embrace his own โ€œstyleโ€ Now more than ever development systems should be about hyper individualization.
Taylor Walls breaks down everything he does to make himself the best defensive shortstop in the game!
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Iโ€™ve said it before and Iโ€™ll it again. Businesses would be better off being run like sports teams.
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I can tell you 100 percent that this matters. Such an obvious problem when I was in working for the Rockies during 2015-2019. They had one of the best teams with zero system behind it. All silos + Incompetently arrogant. Another good reminder that outcomes are earned. Good and bad. And here we are in 2026 where some teams truly do not get it.
Three teams left, and all three have bigger-than-average analytics staffs. Brewers: 46 (2nd in MLB) Rays: 39 Guardians: 30 League average: 28.5 The Phillies have the biggest staff in baseball, and they're already home. Like payroll, it's one input. Everything else combined still matters more.
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Looks like she wasnt messing around... Kudos to her + team for drawing the line in the sand and making a convicted bet.
We have relieved Chris Ballard of his duties as General Manager.
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The one main reason I think Shohei struggled this year. Yes, Shohei hit a HR last night but external success does not mean he is ready to perform well. He still struggled massively in the playoffs. And I believe his back leg and interaction with the ground is the culprit. Can you tell the difference?
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You can still hit a HR from a bad base...
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Outfielders and WRs have more in common than you think. Another good subtle reminder on how to have variability in your training. โ€œLeek actually trains with a baseballโ€ The best in the game are far from one dimensional.
.@alexdaysports tested @Jaboowins on how good he knows his WR1 & TE1 ๐Ÿ‘€ @playmaker | @Giants
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Information is free. Execution is cheaper than ever. So why are so many people overwhelmed, dispersed, burnt out etc? A few things I have noticed: ๐Ÿญ/ ๐—จ๐—ป๐—ฐ๐—ฒ๐—ฟ๐˜๐—ฎ๐—ถ๐—ป๐˜๐˜†. More options fewer obvious paths forward. ๐Ÿฎ/ ๐—Ÿ๐—ผ๐˜„ ๐—ฃ๐—ฒ๐—ฟ๐—ฐ๐—ฒ๐—ถ๐˜ƒ๐—ฒ๐—ฑ ๐—”๐˜‚๐˜๐—ผ๐—ป๐—ผ๐—บ๐˜†. Other people's priorities dictate the day. ๐Ÿฏ/ ๐—Ÿ๐—ผ๐˜„ ๐—ฎ๐—ด๐—ฒ๐—ป๐—ฐ๐˜† Feeling unable to change anything ๐Ÿฐ/ ๐—ข๐˜ƒ๐—ฒ๐—ฟ๐˜€๐˜๐—ถ๐—บ๐˜‚๐—น๐—ฎ๐˜๐—ถ๐—ผ๐—ป Constant inputs, no room to think. ๐Ÿฑ/ ๐—ฃ๐—ผ๐—ผ๐—ฟ ๐—ต๐—ฒ๐—ฎ๐—น๐˜๐—ต. ๐—Ÿ๐—ผ๐˜„ ๐—ฐ๐—ฎ๐—ฝ๐—ฎ๐—ฐ๐—ถ๐˜๐˜†. Trying to produce more with no gas in the tank to direct. ๐Ÿฒ/ ๐——๐—ฒ๐—ณ๐—ฎ๐˜‚๐—น๐˜ ๐—ผ๐˜ƒ๐—ฒ๐—ฟ ๐—ฑ๐—ฒ๐˜€๐—ถ๐—ด๐—ป. Living reactively rather than intentionally. ๐Ÿณ/ ๐—–๐—ผ๐—ด๐—ป๐—ถ๐˜๐—ถ๐˜ƒ๐—ฒ ๐—ข๐˜ƒ๐—ฒ๐—ฟ๐—น๐—ผ๐—ฎ๐—ฑ. Too many open loops competing for attention. Were living in a time when its easier than ever to learn something, build something, or start something. AI is accelerating all three. But more access has not necessarily translated into more precision or more meaningful progress. My answer? Less collecting. More testing. Get clear on your specific blockers. Take action. Observe what happens. Review the result. Make an adjustment. Repeat. ๐— ๐—ผ๐—ฟ๐—ฒ ๐˜‚๐˜€๐—ฒ๐—ณ๐˜‚๐—น ๐—น๐—ผ๐—ผ๐—ฝ๐˜€. ๐—•๐—ฒ๐˜๐˜๐—ฒ๐—ฟ ๐—ฑ๐—ฒ๐—ฐ๐—ถ๐˜€๐—ถ๐—ผ๐—ป. ๐—š๐—ฟ๐—ฒ๐—ฎ๐˜๐—ฒ๐—ฟ ๐—ฝ๐—ฟ๐—ผ๐—ด๐—ฟ๐—ฒ๐˜€๐˜€. As AI makes execution easier, what do you think becomes the biggest constraint to meaningful progres??
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I've worked with professional athletes, founders, and high-stakes operators who had no shortage of intelligence, ambition, or work ethic. Yet they still struggled with focus, energy, and meaningful progress. A few lessons on what actually helps: 1/ Uncertainty โ†’ Experiment your way to clarity. Don't wait for it. 2/ Low autonomy โ†’ Reclaim ownership of your time. Stop letting everyone else's priorities dictate your day. 3/ Low agency โ†’ Build evidence that your actions change outcomes. Confidence follows proof. 4/ Overstimulation โ†’ Fewer inputs. More room to think. 5/ Low capacity โ†’ Build the engine before demanding more horsepower. 6/ Default over design โ†’ Design your environment, calendar, and systems. Otherwise, they'll dictate your behavior. 7/ Cognitive overload โ†’ Get it out of your head. Close open loops. Reduce competing priorities. The biggest lesson? The same symptom can have completely different causes. Two people struggling to focus might need entirely different interventions. One needs better recovery. The other needs fewer priorities. More discipline isn't necessarily the answer. Find the constraint. Change something. Observe the result. Adjust. Change the thing that changes the rest.
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Its easy to see why this team is winning more. It isnt always just about talent. The staff seems to be very intentional about creating the right culture and conditions to increase the likelihood of the ideal outcome.
#Giants HC John Harbaugh and Jameis Winston have proven to be the perfect leaders so far in NY. Watch all of this! Winston: โ€œLetโ€™s stay a family, man. Please. Stay a family.โ€ โœŠโœŠ
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