During my 27 years of daily drinking my quality of sleep got worse as time went on.
At the tail end of my drinking I had severe sleep apnea, I was very sleep deprived, depressed and exhausted all the time. The only time I felt half way decent was when I was drunk - and eventually I would pass out - often landing on my face, breaking my glasses and being left bruised and/or bleeding.
How I functioned all those years in that state was a miracle. I was on auto pilot and booze was my fuel.
Today at 103 days sober I am a new man - that dark period of my life is a fuzzy memory.