I had to work today, but I only worked until noontime. I couldn't concentrate past that. I was too anxious. (So I tried to work, but failed...)

my therapist always tells me not to give reasons for why I can't work. she says to just leave it as "not feeling well" or "feeling sick," whichever I feel is most appropriate to describe the situation. but I didn't even want to deal with that today, so I just pretended I was working and then, yeah...