One of the things that can cause anxiety for many people is a lack of control. People don't like feeling out of control of a situation, but there are inherently many situations in life that we have no control over. The anxiety sufferer has to realize when it is necessary to let go of control. Fighting for control over someone else's actions or something that is out of your hands will cause you so much unwelcome stress and pain.
You can gain control by giving it up. When you realize that there is nothing that you can do in a situation, you can actually become empowered. Ex: In my divorce I have come to realize that I have no real ability to affect my wife's actions. At least not in the way that I want. When I realized this it brought to light that there IS in fact something that I have a lot of control over. ME. I can control my own actions. Fully and completely. When you focus in on this, you can do a world of good for yourself. Apply yourself more aggressively to the things you can control: your job, your family, friends, hobbies, and most importantly being who you are. If you take pride in being an honest person, don't let adversity change that.