If you need to vent or if you have some problems but you don't want to bother anyone, just pretend that you are doing an interview and talk about your issues as if there are cameras.
Got Pimples and need them gone ASAP!!! If you pop the pimple, go clean it out with saltwater. Then go and put some ice on it, the longer the ice is on the smaller the pimple will be. (Just be careful not to get frostbite!)
If you are in a bad mood, put your headphones in, play some music and pretend you are on stage performing or pretend you are in a music video.
If you need to memorize something like lines for a play, go over and over the line until you can do it without looking at the words, then do it with your eyes closed and once you have aced that walk around, run or jump while saying the words.
Moisturize, I can't say it enough. Moisturize every day, trust me you will thank me when you're older.