Nothing helps me fall asleep. It doesn't matter how much activity I do during the day. I've ran a mile before, and couldn't fall asleep the same night. It doesn't matter if my body is tired, because my mind just refuses to calm down. I've tried so many things to fall asleep quickly and consistently, but nothing seems to work. I've tried sleeping pills, turning off all electronics an hour before I go to bed, writing down my thoughts, eating, not eating, silence, music, and nothing changes. There are at least two nights every week where it takes a couple hours of lying in bed to finally fall asleep, and I have about one night a month that I can't fall asleep ever, which makes the next day very painful. Falling asleep quickly for me is anytime under an hour.
Although, I guess listening to music does help me to a certain degree. It doesn't change the nights where I don't fall asleep, but it gives my mind something to focus on in the meantime.