Trouble going under due to ADHD

So I'm going to try hypnosis again tonight but in the past I have had a lot of trouble with being hypnotized. I have ADHD and have heard that there are different ways to go about getting myself under. Any recommendations? And yes I know that I have to believe I can be hypnotized, which I do. My school had a hypnotist visit one time and I talked to my friends who went under and believe that it was real, without a doubt.