By John Valentik, MS, CSCS, NASM-PES, CES

If you’ve ever tried to juggle a bunch of things at once—emails, meetings, chores, social life—you know how little actually gets done. That’s because, despite what we often believe, humans aren’t built to multitask. And it’s especially true when it comes to wellness—trying to do everything at once usually leaves us spinning our wheels.

In The One Thing, Gary Keller and Jay Papasan explain that “multitasking” is actually inaccurate. The term originated from computing, but even computers don’t truly multitask—they rapidly switch between tasks. Each switch costs time, energy, and focus. For humans, the consequences are even greater: cognitive fatigue, reduced effectiveness, and slower progress toward meaningful goals.

This is especially relevant in wellness. Whether it’s fitness, nutrition, or mental health, attempting to do everything at once often leaves us feeling overwhelmed and underachieving.

The Power of Focused Effort

The principle is simple: identify the most important task—the “One Thing”—and give it your full attention until completion. Then move on to the next ‘thing’. Here’s how it can look in practice:

Fitness: Instead of trying to build muscle, cut fat, improve endurance, and increase flexibility all at once, focus on one goal at a time. For example, commit to a 12-week strength-building phase to add muscle mass. Only after achieving a solid foundation do you shift your focus to fat loss and body composition adjustments.

Nutrition: Rather than overhauling every aspect of your diet simultaneously, pick one high-impact habit. Maybe it’s tracking protein intake, drinking enough water, or reducing added sugars. Cement this habit first; once it becomes second nature, layer in the next habit.

Mindset and Recovery: If mental wellness or stress management is a priority, choose one practice to start with, such as daily meditation or journaling. Focus on consistency rather than quantity. Once that habit is established, add in complementary practices like breathwork or mindful movement.

Why This Works

By concentrating on one task at a time, you reduce mental fatigue, improve quality of execution, and create momentum. Each completed task builds confidence and forms the foundation for your next goal. This is the essence of deliberate progress in wellness: small, focused actions leading to astonishing results.

Takeaway

Multitasking might make you feel busy, but busy doesn’t mean effective. Real change in wellness comes from prioritizing, focusing, and completing one meaningful task before moving to the next. As The One Thing reminds us, success doesn’t come from doing more things—it comes from doing the right thing, better, and consistently.