I have just learned that I have had a mild headache for the last 5 hours, because I do not have the headache anymore. So... yeah, that explains a lot.
Madness string 101795
I think my best advice on staying positive is to talk to people who make you laugh or smile. There's a lot of research on this, and I have personally experienced that laughing makes you happier. Being around people who make you feel good is good. I know it sounds obvious, but sometimes people forget.