Oh, yes!! The McGuire programme have been the best thing I ever did for myself. BUT! It really depends how much effort you put into it. You have to be strict, keep on challenging yourself for it to work. I've been a bit out the program this past year, but actually spoke with my designated speach-coach yesterday, as I'm trying to set up a new routine. I also love the fact that there are support groups. What I've found to be the best about it is the fact that you're taking control over your own voice. I've noticed that I have begun speaking slower and with a deeper voice, which really helps. My blockings have diminished, and I have a better feeling of them; that way I can use the taught mcguire techniques to "go into the block", while I maintain control. If you have any questions feel free to pm! I can only recommend it.