Problems falling asleep.

Peyton • Southern by the grace of God. ❤️
Literally EVERY night that I know I have work early the next morning (7 am), I can NEVER fall asleep and I feel like I'm up most the night tossing and turning. But if I know I don't have to be up early the next day, I can fall asleep and stay asleep just fine..... It's so irritating!!! How do I fix this?!