Never had weed either, so I can't relate. I know of some that did use it though, breaking themselves from it seemed like hell for a while.
Sometime try it in coffee if you drink coffee. Make sure to add enough, because if you don't it'll taste like crap!
I've never been nicotine addicted, but sugar used to be my drug. Now about the only sweetener I like is honey.
My sister and her husband are wellness practitioners and they claim that sleeping takes a lot of energy and if we're adrenaline exhausted enough it'll be almost impossible to sleep...
Only 3 hours a night is a long term solution toward an early death.
I know what it's like though, I was under extreme stress for several years and at the time I averaged 2-3 hours a night. I'm getting 6-7 now and I almost can't believe the positive difference it makes in my life.