There is a part of the Conscious Mind called the critical factor. It’s kind of like a guard at the gate between the Conscious Mind and the Subconscious Mind. It has the power to accept or reject suggestions from entering the Subconscious Mind.
It has very good intentions and its job is to protect us. Because change is viewed as a threat to our nervous system, any suggestion that does not match the existing programming automatically gets rejected, that’s why we get cravings. That is how it accomplishes its goal of protecting us but unwittingly keeping us hooked to a bad habit. The only way a real change can take place is to get the new programming into our subconscious mind is to bypass the critical factor, through our memories, habits, and emotions.
Memories are created through experience and you may need many positive experiences to diminish the effects of the negative experience. This could take a long time to create.
Habits require willpower and time in order to become habits, we learn them so we can chose to learn something else,
Emotions either happen randomly or require changing the way you think about a situation and that can be enormously difficult to do and also takes time.
Hypnosis brings you a much easier solution, a way of bypassing the critical factor. Through the induction of relaxation, the critical factor goes to sleep for awhile. The Conscious Mind stays awake, and can still make decisions. The difference being that you are now in control because your subconscious is receptive to any suggestion that your conscious mind wants to let in.