They know that there is little, if anything, to be gained from comparing themselves with others.
They know that this tendency damages their sense of self, kills joy and breeds feelings of envy, low self-confidence and depression.
They know that people present an edited version of themselves to the world so what they are comparing against is not even real.
They know that there is always someone out there who is bigger, better, and more successful so this is a losing battle.
Instead they focus on valuing themselves, and accomplishing their own goals.