I WFH full time and have been for a while. Here are a couple things I do to stay sane:

- Make part of your home your office. This may sound obvious but do not work in any other part. Do not take your laptop upstairs to sit on the couch for a little. This will make sure that when you are relaxing later, you still don't feel like you are at work.

- Take breaks from time to time. Whether you need to make another cup of coffee or just stretch, don't sit or stand for too long. I always try to get outside and walk too. It's easy to forget to go out and get some fresh air.

- Remember to take time for lunch. I take an hour to eat and attend to any small chores I need to tackle.

- Buy a decent set of headphones to have some white noise or music on if there are distractions around the house.

I hope this helps!