I have the same problem. It seems like anymore I can't find anything that I'm interested in doing. I know when I was younger I was interested in a laundry list of things and now it's like "blah. this again"
My cousin however tells me that if I pick something fun that I used to enjoy and stick with doing it over and over even though at the time it feels forced I will learn to enjoy it again when the depression starts to lift. To me that seems like a load of pooh but I've tried it and I've found that some arts and crafts really are interesting again.
This is just a suggestion to stick with it even when it's rough. Hope it helps, or at the very least lets you know that you aren't alone.
Kelly