Has anyone tried it?

My boyfriend's dad is a hypnotherapist and I never really considered its uses in depression (I had always heard of it being used for addictions and the like) but I was pleasantly surprised to find out that hypnotherapy can be an aid in many other conditions like depression and finding the source of that.

So now I'm curious. Has anyone tried it for depression? Or for any other problems like quitting smoking or drugs or alcoholism? Has anyone thought about it and want to get some more information on it?