Negative thoughts are the cause of your anxiety or
depression. It took you years to arrive at your condition, so that it cannot be cured immediately, what you need to do is to change the way you think, a gradual process, through cognitive therapy (with therapist or, like me, through the use of tapes/CD). I bought kit from the Midwest Centre for Anxiety and Depression, it is a 15 week course, but at the end i felt 80% cured.