Question: How often should I listen?
Answer: As often as you can.The subconscious mind is like a muscle,the harder you work it the better the results.
Question: When Should I listen?
Answer: Whenever you can, most listen before they go to sleep.
Question:I fell asleep listening to the track did I do anything wrong, and will it still work?
Answer: Falling asleep is fine just means you were deeply relaxed.Suggestions will still work.....providing you want them to.