Hypnosis should be done as a last resort only. Be very careful, as there are no real shortcuts in recovery (whether that is drugs, alcohol, religion -- irregardless of the subject). Your real fight is against yourself, perhaps fears or mistrust or belief in yourself, I'm not sure. The cultish teachings played on those parts of yourself and used them against you. This is where you are now.
you can move quicker through the process by deciding what you will believe and disciplining yourself to act and behave accordingly. Expect that there is a part of you that will resist and will fight. This is normal
I want to echo what megadude and Satanus had to say. I used hypnotherapy when I was recovering from abuse issues. It is helpful in the short term, but it does not work as a panacea for every problem. Of course, a hypnotherapist is like any other therapist, there must be a good match; the way he/she talks and conducts themselves has to mesh with you. In other words, it's like dating. You've got to hit it off in other words.
A hypnotherapist will, at best, be able to speak to your subconscious. But even then, it will be you who makes the change not the hypnotherapist.
Recovery is a process. It takes time and lots of effort. It is desire meeting hard work. In your case I'd recommend giving yourself permission to think differently and to believe differently. It is normal to fight against change, especially from a sect like this one. Everyone goes through this.
Chris