Since my business started having trouble I have slacked off big time, but I'll tell you what helped me vault from being a pretty neurotic person to a somewhat normal person.
Creativity. It's my belief -- and it's not necessarily correct or universal -- that anxiety disorder preys on the right brain. Think about
it. Your brain is where everything's going on, right? If you have anxiety it starts there, and your brain could even make you feel ill at your stomach or make your chest hurt or whatever. It is creating physical manifestations of anxiety. To keep it from doing that, you have to give the creative mind something to do. My weapons of choice are a guitar and a camera. Yours may be a paintbrush or pen.
Creativity is a lot more than just what people think of as "artistic". Any kind of problem solving uses the right brain. Engineers designing a bridge rely just as much on their left brain as they do their right. Figuring out how to fix your cabinets or whatever may be wrong in your home is a left-brain activity in large part. Writing anything is, too. You have to formulate your thoughts, then assemble your vocabulary and sentence structure in such a way that your thoughts are read well. It doesn't have to be a novel. It could be a short paper describing how to warm up a microwave pizza. The more detailed you make it, the better. Even proofreading or revising what you've already written is a good creative exercise.
So those are my thoughts on it. I also take Klonopin and it helps quite a bit.