Hypnosis is not the usual treatment for anxiety. Although some may find it helpful, studies have shown that talk therapy and self help are more effective methods of treatment when it comes to anxiety and phobias.
Chimp Paradox theory is worth a try, though I do not know of any studies or proof that it works. If you feel you can learn something from it, then taking a look at it would not hurt.
Although anxiety is normal in every day life and can sometimes increase due to stress
or trauma, experiencing it without obvious cause usually means that you need to pay attention to what might be going on.
Anxiety can seem irrational. You are anxious and can't find a reason why. But anxiety often shows up as a symptom of a deeper issue. It is the body's response to your thought(s) that something is wrong and you need to be on alert. What caused you to feel that way is what therapy and self help can address.
Therapy is so effective because it helps you uncover what you do fear- whether it was a past issue or something that happened to you in the present. Self help is also a good way to address how you feel. It helps you learn more about your body's reaction to the anxiety and how changing your thoughts can often change your body's reaction to anxiety.
There are numerous resources to help you learn more about anxiety. The more you know, the better you can help yourself. Here are some to get you started:
The Anxiety and Phobia Workbook by Edmund Bourne is excellent for any fears. It is self help and contains everything from supplements to relaxation techniques.
The Cognitive Behavioral Workbook for Anxiety: A Step-by-Step Program by Bill Knaus Ed.D. and Jon Carlson Psy.D. Ed.D.
to Power: Proven Techniques to Calm Your Anxieties, Conquer Your Fears, and Put You in Control of Your Life by Lucinda Bassett http://helpguide.org/mental/anxiety_types_symptoms_treatment.htm