I don't trust anyone screwing around with my mind like that. A man's mind is his last sanctuary.
Personally, I'd recommend reading or thinking about something that you like reading/thinking about just before you choose to go to sleep, and don't let your thoughts deviate from it at all. Dreams are heavily influenced by your own train of thought.
mom is getting Reiki later this week from the same person, because some of her clients have been asking if it works for their chronic pain. Since she's never tried it, she wants to see how it can work. I'm probably gonna go one more time before I leave next week. Also, she recommends everyone who has nightmares to cover their mirrors in their bedrooms