The remedy I know can be considered illegal & immoral ...:)

On a serious note...remove all electronic gadgets from your bedroom...TV, laptop etc....if you use your mobile as alarm keep it far away from you...if used to a nap in afternoon, dont be in bed after 4PM...stick to bedtime schedule and start preparing urself about 1 hr. before that initially...listen to some soft music to pacify yourself..:)

If you try what n100md has said, share it here...it sounds interesting.