"Don't let something out of your control affect your play."
The use Electric Buyers said this in another thread (http://boards.na.leagueoflegends.com/en/c/gameplay-balance/9AmqQ72e-observer-expectancy-effect-how-it-applies-to-league).
Can it be one of those little tips in the champ loading screen? I feel it hits that sweet spot of "ccommon sense but we always forget it."
I know that for a while I'd let another lane performing poorly suddenly cause me to play less just because I'm all "it's gg" but the moment I got over that, all the sudden I start having all these awesome comebacks despite getting stomped early game. I feel it would help players out if they could be reminded of this every once and a while.