My plan of attack was reversed a bit...rather than set a strict bedtime, I set a strict "wake-up" time. after a few days of waking up slightly sleep deprived, it forced me to start going to bed earlier. I also am regimented about taking my meds right at 8:30. Since meds make me drousy, it sure makes an early bedtime easier to deal with.

I hope you find what works for you! Cheers.