Personally, I smoke too much, develop ulcers, get blinding tension headaches, go through nasty bouts of insomnia (case in point, it's 6:00am and I've been awake since 10am yesterday), and recently have developed so much tension on one side of my neck that I'm starting to pull my shoulder out of alignment.
On the other hand, I like to do a little yoga on the wii fit, cook a nice meal, clean my kitchen (down to scrubbing the floors and bleaching the counter tops) or, until 4.0.1 was released, log on my Rogue and Pwn some Alliance filth. Taking a long drive in the countryside can be nice too, if you can afford the gas. I just get in the car, pick a compass point, and head in that direction until I feel better, then turn around and/or find a hotel room. Or, if the weather cooperates, I find standing on my balcony watching it rain, with all of the lights in the house off and candles lit helps a lot - but I like rain. Other than that, pretty much everything CG said, except the Uke part. I can't play a ukulele, and apartment complexes generally tend to frown on the late night playing of saxophones, clarinets, or trombones. Oh, and not the crying. Not that I have anything against it, it's just really difficult for me to do unless I'm extremely depressed, and I'm not that far down yet.