Great read.
I actually have a little bit to contribute to this though, as a Magic: The Gathering player.
In high levels of competitive play, we have something we call "Bruce"
OP touched on it, but I really, really enjoyed this article forever ago when I read it and it's not something I shall soon forget.
It's explained rather thoroughly in this article:
http://www.starcitygames.com/magic/misc/2005_Stuck_In_The_Middle_With_Bruce.html
(It's long, but read it, it will significantly improve your gaming mindset)
I should probably explain a few words from it so non-magic players can better understand the article
PTQ- Pro Tour Qualifier
mulligan- If you draw a bad hand in Magic, you can put it back and draw a new one at the cost of drawing one fewer cards. (Ex, you draw 7, hands sucks, mulligan, draw 6)
Two land hands- hands containing one land, two lands, zero lands, 6 lands, or 7 lands should nearly always be mulliganned.
Resolve- the actual definition of the word, just in the game
mana screwed- having too many or not enough lands in your hand or from your deck. Shouldn't happen if you just mulligan a bad hand, shouldn't happen if you don't Bruce.
tl;dr, read it. Read it. Seriously.
tl; still dr, Don't ever call Johns, or anything close to johns, even if your entire body begins to turn to sodium. And not just Johns, but you have to have a NEED to win to win.
The winner of a match is usually decided by who NEEDS to win more.
I've managed to kill some of my Bruce. I think it's hardest to keep him inside when you lose to someone you shouldn't have lost to due to variance (Which happens less in Melee than Magic but still) and you get really pissed off that you lost and then the next game I Bruce all over the place and I can't win anymore. Playing anymore games after that lost one means I've already lost. I have to justify my loss by rematching him and beating him.
BUHH ROOOOSE