I doodle. At home, I work on artwork, preferably putting in details or something else somewhat "mindless" - anything where the artwork is mostly autopilot.

The same thing works for many repetitive activities. Wear headphones while doing dishes. Listen while driving, walking, anything of the sort. The important thing is to have something that takes up a bit of brain, but not too much.

My experience is that if you practice listening long enough it’s easy to focus. I’ve been doing it everyday for more than 5 years. I remember what you’re talking about but personally no longer experience it