On breaks

I'm on break at work as I write this, and it's interesting how different my thought process is while on break than at any other time. How long do I have left? What should I do? Will I be able to make it through the rest of the shift? Instead of enjoying the time off, it suddenly becomes almost more stressful than staying at work would be. The one major advantage to a break is not having to work--but this is offset by not being paid. It's interesting how different my outlook is while on break versus when I get out of work for the day. Yet still, for some reason, I enjoy my breaks. I'd go crazy without them on long double-shifts like today. I wonder if there's anything of value to these wonderings...