What should I be doing?

I just woke up and could not figure out if I wanted to start studying, or reading a novel for fun, or what. I really need to study. i think I probably failed my anatomy test yesterday, and it really sucks since I desire sooo much to do well.
I screwed up again last night. I gave in to temptation. I didn't want to do it, but I did it anyway. Unfortunately my sinful desires have won out, when it should be the other way around. Now I feel guilty. Talking to God sounds hard. Each time I ask forgiveness my words sound emptier and emptier. I wish I would just stop! I am past the point of being fed up with myself. ...
...Hmm well maybe I should just go study and worry about all that later.