In my career I've sometimes been criticized for being overly harsh on people due to high standards I set for myself and my coworkers. I didn't always think that was fair criticism, but I worried if I tried to change I would over-compensate in such a way as to lower my standards. And if I wasn't confident I could be less harsh and keep standards high I would rather be the "asshole" with high standards.

Which is to say that personalities are a complex thing, and maybe there are trade-offs involved when you try to adjust your personality. If you aren't a pro gamer, if being mad at making mistakes when you're gaming is the only time you lose control then all things considered you're doing pretty well.; If you "fix" that, maybe you risk blowing up at a colleague at work because you no longer have the "pissed off at making mistakes" outlet in your gaming.

To give the "sometimes the best solution is 'do nothing'" perspective...