Mindset changes everything?

[quote=SeAXyber]Hi mobafire community :) SeAXyber here from Ph server. Ok, I'm not actually new to LoL, but I have a question a noob would probably ask. background: started towards the end of the "elo" era. remained silver end of s2, ranked up to gold v and got stuck for majority of s3, realized i wanted plat border so badly that I ranked myself all the way to plat v in a week. now here lies the problem: ever since i reached plat V i cant seem to win games. I'd get to upto 51 LP and have a horrible 5 game lose streak run and mmr is matching me below gold IIs now. I used to firsr pick fizz, tf, vayne a lot but now people all of a sudden know how to counter HARD and so im now really scared to play the champions im comfortable with. so my question to you guys is: how do i deal with this mental problem? :([/quote]