Do not practice right after a meal. If you fall asleep, don't worry. Next time, try to stay awake the entire time. For example, while breathing deeply, try imagining yourself in a place where you feel comfortable, safe, and relaxed. This may be a favorite vacation spot or a porch swing in your own back yard.
Some people use audio tapes of relaxation exercises.
Ask your relaxation instructor how to obtain these tapes. Others feel embarrassed for taking the time. It's possible that relaxation may not work for you, but at least try it. For many people, the time is well worth it. Suggestions for positive change seem to be more easily accepted while a person is quiet and relaxed.