Here's a quick video in which I address one of my clients' most frequently-mentioned fears, that their anxiety is making them go crazy. I've been there. I've been so wracked by anxiety and panic attacks that I worried I was losing my mind, losing my grip on reality. I was worried my husband was going to have to check me into an institution! And a lot of my clients have the same fear - am I going crazy?!
The bottom line is that if you're worried you're going crazy, you're not crazy. Insanity is the absence of rational awareness. Anxiety is, in part, a hyperawareness or yourself and/or your surroundings.