How to fix my crazy sleep pattern?

Good Habits: Depends on what you mean by crazy. But generally, keep a regular schedule no matter what. Avoid napping, and substances that keep you awake if you are trying to sleep, like caffeine. Avoid bright lights at night and get as much sun in the morning. Occasionally, disrupted sleep patterns can be a sign of a sleep rhythm problem and you would need a sleep specialist.

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, along w light reading or warm bath.