Just find something you enjoy doing, if you don't feel motivated by the classes you are currently taking than they aren't for you.
I'm pretty much the same way as you when it comes to classes like english and history because I fall asleep during the lectors and stuff like that. But then maths and sciences I have no problem studying and doing my homework because I enjoy learning it. You have to find something your good at, and something that you feel you would like to learn whether you are getting graded on it or not.