Working 12s

Hello everyone,
I am new to this site and glad I found it. It was hard finding a place for nurses to talk which surprises me because, my God, there is so much we can talk about.
Well I have been doing 12 hour shifts for 17 years. I have to say, I still haven't been able to figure out exactly how to do it. I just worked 2, went out for dinner after, and today I couldn't get myself out of my pjs. I showered and put new ones on. I laid down on the bed at 2pm and passes out until 430pm. I feel a little depressed because I missed a beautiful day but I was just so tired! I think everyone must feel my pain but sometimes it feels like I'm the only one. Any responses?