I used to think about work all the times when I started freelancing. I had no boundaries and routinely worked until 1 or 2 am. When I started contracting with bigger companies, I just set up office hours, powering on the laptop when I start and powering it off when the day ends. I don't have the office accounts (slack & email) on my phone, but they know my phone number so they can call me or message me if something urgent pops up (very unlikely as I'm not a senior). I found that as soon as I close the laptop, everything fades away as I'm not tempted in any form to interact with it. I could, but with nothing in front of me, it's just a single thought. I also have other stuff to do like reading, learning foreign languages, watching Twitch or YouTube, or just planning the next day (personal part, not the work part)
