Part of it, so it says on the net, is related to neuro-linguistic-programming (NLT) which does have some following and has been around for a long time.
The tapping idea has also been around a long while, and similar techniques are used with an elastic band round your wrist, which you flick as a trigger to take you back to where you want to be.
Don't forget that wiki is not an encyclopaedia - it contains the views of individuals who write the articles - it is not unbiased. So just because the person who wrote that article does not rate it,it does not mean it will not work for you.
My OH, who was a doctor and really has no truck at all with alternative therapies, trained in hypnotherapy because he could see how it helped people.
I really would give this a try annie - it could be very productive for you.