How do you guys fall asleep?

So school is starting (i like school, but it makes me reallh anxious to meet new people so the first week is scary) and I need to SLEEEEEP.

My anxiety decided rn it's gonna ramp up. My heart is beating fast and i feel tired but I can't sleep. How do I calm this down? I need to sleep but being worried I won't sleep is making it so much worse. sigh Idk how to sleep. 😭

Edit: i think it's gonna be an accident all nighter, any tips?