maybe you should PR and activate another subject somthing that is nothing to do with school work, do you have a hobby or somthing that you have always wanted to do somthing that you enjoy, you seem to be trying to hard, to do PR in a playful state, maybe you should learn a subject that to you is playful, like learning to play an instrument or paint, although this has nothing to do with your school work it will have a possitive affect, as when you succeed, it will give you confidence to continue with PR, or get books on yoga, possitive thinking, how to study, maybe you should approach this problem from the back door rather then head on. I am a beginner PR, and have PR the first book of my choice, i still have alot of questions but i wont give up, so good luck to you and keep at it.