Interesting replies, thank you.
I sell books online so spend much of the time in front of a faceless computer.
I never used to go out much in the day, only to the post office if necessary, when my son was alive as I didn't like to leave him home alone in case he made a mess of the place (which he always did). That was my OCD at play, I guess. After he died, my GP told me I needed to make an effort to go out every day otherwise I would simply stay at home and get ever more sad, depressed and lonely.
So now I force myself to go out each day, book hunting, though I am rapidly running out of space to store them all. Ideally I should turn my son's bedroom into a library to give me more space, but just going in there makes me weep.
If I don't get any orders, I also get very down as I take it as a personal rejection - that nobody wants anything I am selling and that, therefore, I am a lousy judge of a book and worthless.
My son used to go to the local car boot and find some wonderful bargains - I think I once sold one of his £1 purchases for £120 or so.
Ducky