What do you do when you're totally overwhelmed?

Recently I have been so overwhelmed that I’ve lost my excitement to do anything. Everything has become a chore. Between going to class, studying for those classes, being the president of a student organization, trying to keep in touch with all my friends but having the strong sense that they’re fading away and think I’m ignoring them, and going through a recent breakup I have lost my will to do anything.

My first reaction is to cut back what I can but I’m essentially down to the bare minimum and I still have no time to myself or to do what I like (mountain biking, paintball, taking my dogs on a walk, etc).

What do you do when you’re overwhelmed?