This is called self-hypnosis and is a recognized form of hypnotherapy. There is only one correct way to enter a hypnotic state. Each person experiences hypnosis differently because each person's mind processes information uniquely. People experience time and physical sensations differently. Some hear and remember every word from the session, while others remember only parts of what the hypnotherapist said.
Some people report having very vivid images, others have vague images.
Some people experience nothing unusual at all. Hypnosis is meditation. Meditation is a type of relaxation in which individuals empty their minds of other thoughts and then focus on a particular image or idea. Hypnosis uses relaxation to enhance suggestibility and to induce a hypnotic state in order to achieve a goal. Find a Practitioner near you.