I think you need a regular interest not involving a screen - walk in the woods/ go to the gym, read a book. Rest is your friend.
I agree with Pete. It helps a lot to have non-screen pursuits mixed-in throughout each day. For me, those are mainly physical — which I think should be the emphasis for us who mostly sit/stand at a desk during the day. Running, biking, climbing gym, strength/mobility training, grappling classes are my personal menu. I don't do all of those every day, but I try to do a couple each day. Some are also my main source of socializing IRL, and that is also a daily necessity to keeping my mind right.