I think my new rule of thumb is that my mood matches no one else's ever. *Ever*...
And that, when I'm in a good mood, I should avoid all things that might even vaguely concievably rob me of that.
Such as thinking too much about the things that are putting me in a bad mood.
It works for other people. Just pretend it doesn't exist. Ignorance is bliss. What I don't know won't hurt me... it works for all those other people, right?
Joy through Lobotomy.