I'm a big believer in trying many different things in order to achieve your personal development goals. Focusing solely on hypnotherapy may help to a degree, but you know what's even better? Doing hypnotherapy AND a whole bunch of other stuff.
I'm not knocking hypnosis, though. I know that stuff works. That's why I've included many hypnosis tracks in my
Seductive Introvert program. In fact, the hypnosis track from Month 1, Intro to Inner Game, is pretty much exactly what you're looking for.
However, bear in mind that it's just one piece of the puzzle.
And don't fall for the trap of thinking that you need to perfect your inner game or tame all of your personal demons BEFORE taking action. Take action at the same time. Don't let your brain give you any bullshit excuses. Feel the fear and do it anyway.