I know this post is very old, but I'd like to add to the conversation:
Lately, I feel that I have retracted my developing mindset in staying calm and collected during losing situations in Smash 4. The past couple of weeks--even a month--has been one of the hardest times of my life, and I think the stress from outside the realm of the game had unfortunately manifested itself in post-set rage or frustration.
The worst part about this stress was that I had to cut off a group of friends that finally admitted that they grew so annoyed and tired of my emotional habits that they wished I'd talk to other friends instead of them about my issues, in and out of the game.
The thing is, these friends weren't the best kind of support group, either, as they constantly **** on me for either using a high tier or not being good enough because of my gender. And I think this was where the majority of my in-game frustration came from: the fact that I constantly felt the need to prove myself because I'm not a guy playing Smash 4, but--to quote one of these individuals--a girl that's "biologically" slower in reacting or adapting mid-battle.
Smash 4 has unfortunately become a game filled with terrible memories that I've finally been pushed to the breaking point of dropping it from my life. I felt belittled, left behind, and even dwelled in the anxiety that my former friends didn't believe in me because of my gender. How could a girl possibly get good in a video game? was the constant question nagging me and subtly biting me every time one of these individuals threw trash talk at me.
Long story short, the main reason I got frustrated or angry at the game was because of the kind of negativity that surrounded me, that fueled the pressure of trying to "git gud."