If you feel more energetic during typical bed time hours, then you certainly are struggling to fall asleep. For some folks, this may signal that you have Delayed Sleep Phase Disorder. Simply put, this is a problem with your biological clock.
There are a number of treatments including chronotherapy. Ask your doctor about chronotherapy may sound counterintuitive. You delay your bedtime 2 hours each day until the desired bedtime has been reached.
Sleep Tip #258: Ask your doctor about chronotherapy if you are staying up TOO late and getting up TOO late.