The first step in is to learn as much as you can about it, as a thorough understanding of your anxiety can in itself reduce its frequency and intensity. It can be tempting to avoid any objects or situations that provoke or aggravate your anxiety, but in the long term such avoidance behaviour is counterproductive. When anxiety comes, accept it. Do not try to escape from it, but simply wait for it to pass. Easier said than done, of course, but it is important that you should try.