Occupying the mind with a mundane task seems to be really helpful for me. Getting stressful thoughts off my mind is important. But just trying to stop thinking

Occupying the mind with a mundane task seems to be really helpful for me. Getting stressful thoughts off my mind is important. But just trying to stop thinking about whatever is worrying me doesn't work because my mind doesn't like to sit there doing nothing, so it looks for something to fill the time with. And the easy choice is whatever issues or problems I've been struggling with lately. But if I do a mundane task, my brain has something to work on, and it doesn't go looking for things to occupying itself, which means the risk of thinking about something stressful is much less. Personally I use a crossword puzzle app on my phone. It requires my full attention to think through different words, and the clues give sufficient fodder that I can have some harmless, non-stressful mental tangents. And the thought of leaving a crossword puzzle and coming back later doesn't bother me, unlike say quitting a game of chess in the middle would.