As with the other articles in this section you are encouraged to seek professional help in dealing with these kinds of problems. Perhaps the following can help until you get to the psychologist, or, if your problem is not too severe this may be enough for you to deal with it quite effectively.
Some stress is good.
We go to movies to experience stress. Can you imagine a movie that did not cause some stressful moments. Music has it's minor keys to get us ready to enjoy the moment the composition gets to the major keys and all is resolved into a moment of bliss. We seek good stress in skiing faster and steeper hills as our skills increase. These examples of good stress are fun because we feel in control.