I got a wall around 35 also. I have 3 alts at this point though. So I just flip here them all. Do fishing, cooking, professions. Use that rested exp. Play a spec that’s fun.
The biggest thing for me though: get sleep.
Nothing makes me stare at the screen more than being really tired but feeling like I need to play WoW. And playing WoW takes away sleep sometimes. It’s a weird thing to think about, but I bet a lot of people that play WoW are sleep deprived. Especially if working 9 to 5 with a family.