Routine helps. Routine and being busy. I've found that during periods of my life when I have a lot going on, most of my anxiety tends to dissipate. I suppose this makes sense on face validity because my mind is so preoccupied with other things that I don't worry about my normal problems. When I was drawing for 10 hours a day, I would pretty much never experience anxiety.
As for more simple methods of coping, I used to smoke a lot, which kind of helped. I wouldn't advise that to you for obvious reasons, but I believe there are a lot of smokers here for this reason.
I've found that walking helps when I am having an anxious episode. As soon as I start to feel it, I put my boots on and head out the door. No looking in the mirror. No fixing my clothes. Keys, boots, coat, out the door.
Breathing exercises can help. I struggle with skin problems and have had a lot of physical pain in my life. I practice steady and meditative breathing when I'm experiencing either pain or anxiety. It helps me a lot but it requires practice and patience. It won't help you for a long time, until it does, if you understand me. If this is something you are interested in, google meditation breathing and read a guide. It is common as a foundation of all meditation. It's very worth while to practice, plus it's a cool conversation topic to tell someone you meditate to some extent!