the best advice i can give you is what i do when i go ice cold.
WALK AWAY!
when your head isn't clear and you press - the books will KILL YOU! you 2nd guess everything you like and question yourself. when you do this you are better off not playing.
when i go ice cold i walk away for about a week. i don't make a SINGLE BET for the week. i take the time off to relax and clear my head. when it comes time to make plays - i make "dummy" plays - i pick games - but don't actually bet them - just see if they woulda won, or not. if they win - i know i am "back" and start betting real money now.
so - walk away for the weekend. you will find it does a lot of good.