For me, the posts about being wealth not being joy was helpful because it equalized happiness to everyone. Everybody is capable of it, and everybody is also capable of depression. No matter what, you're still a human with a human brain and human chemicals running through that brain. Unless you're legitimately clinically depressed, your brain is capable of functioning the same way as a happy person brain, and a happy persons brain can slowly start to function the same way yours is. If you are clinically depressed, there's medication that has the potential to change you're life (from what I've seen happen to friends).

What I'm trying to get at is, on a very base level, you're totally capable of feeling normal again. Money probably won't fix it, but maybe figuring out why you don't feel normal can help you start to fix it. Talking to someone who might be able to relate to how you feel or a therapist who is trained to help you about how you feel is the first step, or at least it was for me.