Anythings that interferer with concentration, including drugs, alcohol, or mental illness, will severely hinder the process. Even if you are very suggestible, you will almost certainly reject any suggestion that make you uncomfortable. “At most, you would do something that represents only a minor breach of your values,” Bourne says. Your motivational level is very important in achieving results, and so is your choice of hypnotist. As in any therapeutic relationship, trust and confidence are keys to success.