You might be onto something. When I left home to live on my own and find a new job, my entire personality changed and I grew to be a much more optimistic, happier person than I was. I didn't have any friends but I was happier living alone than I was with the people I did live with before because everything felt new and exciting.
It was insane how much my brain switched - almost like I couldn't recognise myself anymore. But I couldn't live on my own anymore due to reasons so now I'm back living with the same people in the same location and I'm as nihilistic as ever again. sagey sage for blogpost