I go to work.
I've recently gone to work for 14 days straight without any weekends off. I've had many issues with my girlfriend and instead of sulking, I just let the boss know I'm coming in and to let the security guard know. I swamp myself with work to the point that you have no choice but to forget about whats bugging you and just focus with whats in front of you. If not work, I study for upcoming test. I put my mind on other things and literally forget about everything/anything else.
I know that it may not helpo you out, but the logic of keeping yourself busy does. Make sure its with something productive though. Something that you know will make you money, help you learn, build relationships, ect.
Not to frown upon anyone, but I have always felt strongly that if you're always doing something, there is no time to be depressed, sad, mad, ect.
Joy