Anything but the performance
Dwelling on things that 'have' happened, and then use that as fuel to affect things that 'will' happen to the detriment of our enjoyment of the game.
In this video, Duncan McCarthy of Ignite Sports explains how we should instead enjoy our surroundings and the company of our playing partners to alleviate this issue.
Doing so will benefit both our game, and our well-being when spend our free time playing.
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