I don't really understand people who are unhappy all day and just wishing for "time off". To do what? Sit and stare? Lay down?

I wish for everyone the joy I have most of the time... spending ourselves in endeavors we believe in. For me, I'm playing music (practicing, rehearsing, performing, recording) and I'm building things in software (the products, relationships, minds and talents of my teams). I'd *rather* do these things than "watch tv" or "hang out" aimlessly. 

Exhaust yourself in a good cause! If it feels like play time, you're doing it right.