On the line of above technique, I suggest Yognidra (
Yogic sleep or divine sleep) Tapes may be available with yoga people.
it consists of Relaxing all muscles,then concentrate on berating,then visulise each part of the body getting relaxed,then visualize imp. part of the body like heart liver etc and then visualize enjoyable scene or few objects like clouds ,,sky, garden etc as symbols. Better get some tape which comes with some soothing music.