Right there with you. I've seen the school photos my parents keep: at 13 it's a normal photo, at 14 I have deep grey shadows under my eyes. I haven't been able to sleep "normallly" since then. I was diagnosed a couple years ago at 35; getting on stimulants improved my waking life immeasurably, but the messed up sleep remained. One of the Drs recommended melatonin; this is the only thing that has ever really helped. It kinda short circuits my brain's intention to stay awake until 4am looking for who knows what, and when I fall asleep I really sleep. Still only manage a few hours of sleep when I'm getting up at normal o'clock for work, but at least I'm getting up.
I don't have real advice, this is mainly for solidarity. I'm tired too.