I sleep around 10-12 am and wake up at 3-4 for no reason and be awake. i have alot of stress because i'm in nursing school. how can i sleep better.

Insomnia: Early morning waking is asign of depressive affect disorder,stress reduction with cognitive therapy,avoidance of stimulants such as caffeine,an exercise regimen,yoga etc etc will help.Are you a candidate for sleep apnoea? Have a low threshold for getting help so that your studies do not suffer.Good Luck

Consider therapy: Sleep Hygiene is Key. Retire & rise same time each day. Keep bedroom dark & cool & use only for sex & sleep. Turn off tv. No naps. Exercise regularly but not in late evening. No caffeine for 6 hrs & no alcohol or tobacco w/i 2 hrs of sleep. Keep dinner moderate sized & finish at least 2 to 3 hrs before sleep. Can try warm milk, Chamomile tea or melatonin along w light reading, warm bath .