I'm going through something similar to this just now but I (was) top silver trying to get into gold. I really don't know why I take my league and rank so seriously but I think most people do. I surrendered 10 games in a row this afternoon in an effort to stop caring about my rank and win/loss ratio. I definitely need to step back from the game a bit, after all...it's just a game!
I would also like to warn any new poeple wanting to get into SC2 (multiplayer anyway): This game is hard...like,
really hard and if you aren't willing to make SC2 more than just another game, more like a hobby, don't expect to get very far. I play a few hours per week and watch a few hours of pro matches and I think I'll reach my peak in Gold league.