Effexor XR
Buspirone
Ice Cream
Beach
Talk, text, or e-mail friends
Chocolate
Sex
Gardening
Antiqueing
LPSG
Shopping
Swimming
Skiing
Getting lost in a good book
Visiting: the Philadelphia Museum of Art, The Cloisters, or the Metropolitan Museum of Art.

It may sound trite; but you need to make a list of things you remember doing when you felt happy. Then try to do at least one of those things a day.

If you want to be somewhat 'Oprahesque' about it then try a Gratitude Journal. The goal is to write 5 things for which you are grateful each day. I suck at keeping journals so anything that requires writing daily never works for me.

I hate to sound like a stick in the mud. If you are depressed, please do not start drinking and doing street drugs! Those things will only make you feel much worse in the long term. Then you might have to deal with an addiction problem and depression and that can be a living hell.