Turning my mind off in one way or another helps me too. I am a voracious reader but I will put on books on tape and zone out (and then have to read the book later) or even out on very familiar rock. I havent tried classical but I will give it a go.

I also realized that playing word games and doing crosswords for an hour really elevates my mood by again, getting me out of my head.

I was diagnosed while being seen by a psychiatrist for chronic depression. After I had been seeing her for 6 plus months, maybe a year, the told me she thought I had ADHD. I was in my 30s and had a son diagnosed with hyperactive type ADHD. After I was diagnosed I had my younger child evaluated and it turned out he had inattentive type like me.

Good Luck!

Also a serial procrastinator and I set alarms for EVERYTHING including reminders that i need to start a larger task such as dressing and getting ready for an event.

Sadly, I am also chronically late and easily distracted (ADHD) so I even set alarms giving me 15 min etc warnings before I need to leave. This helps me only be slightly late rather than really late.

I set all my alarms either at night before bed or in am when I wake up while I drink coffee. It is not perfect but it helps.