See Mantra for some ideas. Choose some soothing music. Keep the music low and slow. It is metered to 60 beats then gradually decreases to 50. For those of you who own it - I prefer Green .
Safety is the key to true relaxation.
It is very disturbing to be deep in a relaxed state and then be disturbed by a door slamming or people talking. I also covered windows and doors for more privacy. Keep groups small and intimate. Never force a person to participate in relaxation as it is very personal. These rules apply if this is strictly for you as well.