There's probably something wrong with me. I'm in a permanent state of happiness/giddiness and I can't help it. I was walking home today after work and I was smilig half the time; there was nothing funny anywhere near me.
And I didn't just notice this recently. I think it was sometime near the end of term (I remember skipping home from an exam once... not realising there were a couple cyclists behind me).
I don't really ever get depressed or angry much any more! It's nice. I'm hoping that this is due to the fact I'm enjoying life, and not only because I don't have anything to be stressed about any more. Except how to get my next experiment running.