Depends on your vices homz... there's a million ways... sex, drugs, food, metal... some agreeable, some not.
Personally, I'd hit the town with my boys and throw down a few drinks. Maybe write a tune or jam something along... if you're into cars you can tune one out or tear up some tarmac.
I dont really know man, I've never really gotten like overly sad about things. Sure, Im cynical, but only because of its logic. Negativity, on the other hand.. is kind of bullshit. I guess you could look at it by saying, you could be worse off. You could be homeless, mal-nourished, a drug addict, an amputee, diseased, or George Bush...
I guess there's a sunny day to combat every rainy one. Call it what you want, man, I just wouldnt dwell on any one thing vs the other when you could find yourself having better times instead of caring so much about the bad storm you're stuck in currently anyways.
Have at it man, good music, good friends, so tear some shit up, would ya?