I'm always so tired, advice ?

This isn't due to pregnancy. I've been like this for a long time. I have a very hard time sleeping at night. I've tried melatonin, supplements, wine, doctor prescribed medications... Nothing helps. Well because I don't sleep at night, I'm always very tired during the day. I take a nap almost every single day after work. If I don't take a nap, I feel so drained. I wish I had more energy but nothing works . anyone have this problem ?