I struggle with this guilt as well.

when I did the bipolar mentoring sessions (briefly), it was 1 of the things I braught up to my mentor- that I should be doing so much more, and I'm not.. and she gave me the best peace of advice- she said just do what you can. don't think of it like you've failed, think of it like you are taking care of yourself by just doing what you can and not overdoing it

I usually watch tv, but I have a short attention span.. so after like half an hour/ an hour, it goes off, and I just stare blankly in to space.

the computer I use is wired, and In another room, so I can't do that

likewise with reading, but with reading it's because I don't have any focus