There's a famous photo from the Rio Olympics that explains how...

Michael's looking straight ahead.
Chad is looking at Michael.
But in that moment, he's swimming Michael's race instead of his own.
Michael won the gold medal. Chad didn't medal.
Focus your energy on the things you control: how you're gonna swim your race, not what somebody two lanes over is doing. You can't do anything about them.
Compete against your own best, not the person next to you.
