^Michelle Obama is the stuff on nightmares, imo. She has one of those permanent scowls. Idk why people point out her supposed good looks. Do they not see that her eyes are forever evil?
A good way to suppress your dreams is to smoke weed. Be prepared for some backlash, though, when you eventually stop.
But what about dream control? Wouldn't that be swell. I don't recall what this book was called, but it was written by a guy named Carlos about his experiences with the natives in the South and their hallucinogenic drug experiences. The guy would hang out with the elders and participate in their rituals, swallowing a bunch of peyote buttons and tripping out, and having flashbacks long afterwards. The native guy would teach him spiritual tactics, like finding and knowing your invented trip-out buddy who exists only for you. I think that Simpsons episode where Homer eats the insanity peppers was influenced by this book.
Anyway, the...chief(?)...explained how you can walk around in your dreams and do what you want as opposed to having no control of your dream world like normal. It takes effort and a sort of skill. You start by simply remembering, like before you sleep and keep reminding yourself, to look at your hand in your dream. You can later move on to having more and more control until dreaming is like real life. I tried looking at my hand in my dream...and it worked! I didn't go further than that, though.