If you feel a bit worked up about something, want to feel relaxed but don't have a spliff handy then do this:
The next time you urinate; flush the toilet roughly half way through.
As the water starts to descend from the cistern close your eyes and take several deep breaths until you finish urinating.
While you're doing this imagine that your worries are being flushed out of your body - keep it vague as you have probably 25 seconds before the water empties. The result will be that you feel much more relaxed
This isn't something I read anywhere, I just tried it one day and it felt good. Sometimes it works and sometimes it doesn't. Let me know if you feel better.
Not sure this works for girls