How Do You Sleep With the Sun Still Out?

I will be the first to admit, I absolutely love sunshine. The way it feels on your skin as you drive with the window rolled down on Reserve Street. Everything except when I am trying to go to bed early.

When I was a young kid I had a bedtime of 9pm enforced by my parents, that was so difficult in the summertime when I heard other kids still playing and having fun. But even now as an adult because I get up so early for work I still attempt to have a 9pm bedtime, this time enforced by me. But when the sun is still shining through the windows it makes it so much more difficult to fall asleep.

Do you have any tips or tricks to help fall asleep fast even with the sun shining through your bedroom windows?