Been WFH for a couple of years, then rented a small office for the purpose of explicitly distancing work and non-work. With COVID-19, back to WFH but now I'm much more prepared.
Success for me meant mentally separating as much as possible work and non-work (not always possible as I can get customer calls or need to deal with urgent problems at literally any hour - such is life of an entrepreneur!)
Physically - separate your work place from the rest. In order or impact:
- rent a separate office (expensive, doesn't make sense now with COVID-19)
- find a few coffe shops, libraries or similar places you can switch between for "work" area (assuming you can work on a laptop) - also not realistic now due to the coronavirus
- have a separate room in a house - not applicable to you as you're in a 1BR apt
- have a separate work-dedicated corner/table/chair in any room in your apartment - I worked for about half a year from kitchen, as it was still at least no in the living room!
Temporally - make clean cuts "going to" and "returning from" work. This can be:
- switching betewen clothes to get in different modes
- taking your dog for a walk, buying groceries, or just taking out trash right after your work
- if there's something on TV that has regular hours and you like watching it (as someone already commented here) - use it to mentally switch off from work mode
- if nothing else, set an alarm, when it gets off, close your laptop, stand up and do a random house chore for 10 minutes, just to think of something totally unrelated :)
Devices:
- it helps if you can have separate devices for work and the rest of your digital life; I treat my laptop as 90% work-related so I avoid using it outside of work if at all possible (phone / tablets filling up the gaps)
- similarly how you want to remove procrastination while working, you want to remove any work-related notifications when not! see if you can stop mail/slack/etc notifications outside your work hours (in my case, i turn off all notifictaions* except pager duty alarms)
In my WHF experience, both before and now during COVID, the biggest problem was working all day, then being less productive during work hours because I know I'll still work all day, then having to work day because I'm less productive during work hours .... this spiral was why I rented an office back in the day.
Every situation and person is different, these are just some tactics that worked for me.