Are you depressed or do you have a crush? Two different things in my mind.

The way I view it, you need to be accepted or rejected. Take action, and then there's less to worry/lose your mind about.

The crush, you can work around. The depression, not so sure.

I have to admit that my own grades have also started suffering from a crush where I did take action, did get rejected, and still obsessing about. I guess it's like any other addiction: tv, gaming, cell phone; you need to push it away for a certain time slot to get in quality work.