In my psychology class we learned that being hypnotised doesn't mean you have given up control. It is a technique that is very much made possible by the client and very little done with the therapist. You have to trust the person doing it or it is less likely for you to be hypnotised. Also not everyone can be hypnotised and not everyone can do it effectively. Also being hypnotised does not allow you to remember things....this is a myth and can lead to false memories.

Just a few things I found interesting.

Its just the power of persuasion and if it is against you core beliefs you will not do them.

Hope this helps,