Well, basically, I just try to clear my head, or maybe focus on something to have my dream be about, and maybe do a reality check or two (fingers, backs of hands, wrist birthmark), and try to sleep. I guess that may be harder for some, but it is kinda simple for me. I guess you should just try and clear your mind entirely, and hope for the best. However, I'm still a newbie, so my advice may be really bad . Hope this helped