For me the trigger is TVs. I've been renting a flat in a poorer area for over a year now. The walls are a lot thinner than in other places. There are a lot of people today (mostly 50+ year-olds) who cannot fall to sleep without the TV on. My neighbor is one of them. And the thing with TVs is that the most irritating sound frequency they emit is the one that is barely audible when you're in the same room, but when you…
I use Howard Leight’s Max every night during sleep to keep my sanity.
So I bought a bluetooth speaker that can play files off a SD card, and loaded it up with a 1 hour rain sounds file and play that in a loop as white noise when I sleep.
Feels better as my brain can focus on the soothing sounds of the rain instead of the thoughts that sometimes creep up in the silence of the earplugs.