I can't do meditation or visualization. I like focusing on deep breathing. I also like being mindful of my environment (primarily outdoors). And I like guided relaxation. I hate progressive muscle relaxation. Feeling my body triggers me.

I would suggest guided techniques and find a voice that you find calming or soothing. And do simple techniques. Don't worry about being a pro or doing it exactly how you think it should be done. Like body position: do what feels best to you. I know you're not supposed to fall asleep, I have, and I just chalk it up that the relaxation actually worked.