I've found myself doing this in the past 5 years as well. After decades in development, I decided to bite the bullet and buy a house. I've since then slowly been converting the garage into a woodworking shop. Most of the projects I've completed are for the workshop itself. I've spent way more time on what I've built than any sane person should but I'm using my shop furniture as a learning experience and nitpick everything.
There's definitely a different type of satisfaction/reward you get from finishing something you put a lot of time in when you can feel and see the thing. I guess it aligns with why I enjoyed front end dev more so than backend enterprise stuff. Its visual.. With woodworking, its not only visual but a physical object. You see every inch of it, every corner, every joint, everywhere where you fixed something, where you took the time to perfectly sand a surface to ensure it looks just perfect in the end.
I also usually put on an audio book or music in my buds. Its a great way to disconnect and immerse yourself into something that isn't tied to anything else at that moment. No deadlines, no PRDs, no tests, no dependencies, just you and what you're working on... Its relaxing..
Sorry.. I lied... there's tons of dependencies.. Those happen to be all the right tools for the job that you don't yet have and every time you do something, you have to decide whether you'll invest the money to buy said tool, or build said thing to help you get from A to B, or if you'll go the other way around and wing it by hand, taking much longer and hopefully not too much of a worst result..