Apparently it's an unpopular opinion, but I am completely in this boat. I suffer from ADHD and my productivity and emotional wellbeing cratered when WFH started. I eat worse than I did at work, I put on weight, etc.
I lived next to the office before I ended my lease and moved in with family so I wouldn't be completely alone, so the office was never a hassle. I was a 20 minute walk away and the weather is usually nice.
I had a clear delineation between work life and personal life. My home was for relaxing and play, the office was for work. It helped me keep my priorities in order. Going into the office helped me mute out the personal distractions of life - personal projects, entertainment, etc.
I have a dramatically different experience at home. I can hardly focus because it's next to impossible to fully separate myself from my toys, as it were.
It's driven my stress levels through the roof because I know I'm less productive. No one has said anything to me about it, nor brought up anything, yet my self guilt is consuming me. It keeps me up at night and I'm dreading performance reviews...