Suggestibility is a very loose term. You may not be the sort of person who responds well to a hypnotist on stage, but you might find, for example, that a doctor administering a placebo to you is something you respond well to.
You have to realise that hypnosis doesn't exist: it just works on people's natural suggestibility, their expectations and capacity to unconsciously role play. You can't make someone do anything they don't want to do.
Your ability to use the principle of autosuggestion will depend, very largely, upon your capacity to concentrate upon a given desire until that desire becomes a burning obsession.
Like the wind that carries one ship east and another west, the law of autosuggestion will lift you up or pull you down according to the way that you set your sails of thought.
Hypnosis is about shutting down the conscious mind and re-igniting the unconscious and the imagination, so while I give instructions to them under hypnosis, the contestants might interpret those instructions in all kinds of ways.
Never worry. Be ever cheerful. Always laugh and smile. You can use the following powerful autosuggestion: "Mr. Worry, goodbye to you. I am a different person now. I am made of sterner stuff." Worry will now be afraid to show his face to you. You can then remove the worries of many of your friends.
Patience and perseverance are necessary in autosuggestion, as well as in everything else.
I went to a hypnotherapist and learned how to hypnotize myself and explored orthogenic training, how to relax each part of your body.
You affect your subconscious mind by verbal repetition.