Mostly I am happy - I don't think it really has that much to do with my circumstances, which now are relatively cushy, just a lucky quirk of biology. I have been reasonably happy when homeless, I do get anxious but not depressed, just not how my brain works.

So please never blame yourself if you are unhappy, it can be the other side of the same coin. I do think satisfaction, the ability to be satisfied is a life skill, but happiness vs. sadness, some of that is biological.