Help Me Sleep Please!

Hannah
I was recently hired as a nurse in the Emergency Room and the Long Term Center at a local hospital. All though I don't start evening and night shift until next week, my sleeping schedule has been completely uprooted. I'll fall asleep by 7-8pm and then wake up around 11pm-12am and be up until the wee hours of the morning, bursting with energy. Is there anything that can help me go to sleep and stay asleep? Please and thank you!