Eating good nutrition, drinking plenty of water, decreasing caffeine (a stimulant). Exercise
, even if it's just getting up and dancing or going for a good walk. Rest when you need to. Listen to your body. Distraction when the anxiety is creeping in - turn on some music, call a friend and talk it out, get up and go walk. But most importantly is retraining your brain. "This is just anxiety. It's no fun, but it's not going to hurt me. It's going to be okay.