Psychotherapy is a very complex field. The sheer number of different theoretical approaches to the human mind and to the practice of therapy may seem to the person nervously stepping into the therapy world for the first time like a confusing array of choices all jostling for competition. It’s important to keep in mind that most of the relatively meagre amount of research that has been done into counselling and psychotherapy shows that all theoretical approaches have roughly the same effectiveness (in the order of a 50 to 66 per cent ‘cure rate’). Certain techniques like cognitive-behavioural therapy are better researched because their short-term nature and slightly more structured method makes them easier to research, and CBT may be especially useful for anxiety disorders. In general the strongest predictor of success is a successful therapeutic relationship rather than the type of therapy, though of course your view of your therapist may be influenced by their theoretical and philosophical outlook.

Reference

Durham RC. Cognitive therapy, analytic psychotherapy and anxiety management training for generalised anxiety disorder. British Journal of Psychiatry 165: 315-323, 1994.