I am focused on being the best I can be at all times.

A lifeguard's eyes move in a pattern, and the pattern includes looking away. Continuous attention isn't sustained by staring. It's sustained by rotation and rest.

At all times works better as constancy of aim than constancy of effort. The intent stays switched on. The intensity has to breathe.

Anyone who has watched a professional up close notices the same thing. They aren't running at maximum. They're consistent, and they know precisely which moments require everything they have.

Being your best includes knowing when the best available move is to sit down for ten minutes.