Alone time is very important for me. If I have to endure enforced socialisation (weddings, funerals, wakes and Christmas), then I end up finding reasons to leave early. Needing to walk my dogs is a perfect excuse!
I retrained and technically work as part of a team, but we all work a lot on our own. I spend more time with animals than I do with people. Routine is key, for both me and the animals. Anything out of routine throws us all out completely!
I read a lot, write attempt gardening (I will grow my own fruit and vegetables one day, once I find out how to over-winter things and not kill them by accident), knit while watching programmes, play the piano, listen to music while doing other things, sew, windsurf... basically, if it is an unsociable hobby, I'll give it a good go!
Living very rurally helps. It's pitch black at night and I occasionally have to herd lambs back into their field (it's OK, I know where they're from), but it's so peaceful! I grew up in a village which is now being stuffed full of shiny new housing estates. It's so busy that it's awful, and I can't even take my dogs for a quiet walk in their favourite place, because that's now fenced off for building work...