Work should be play and play alone. Do what you love — that's the only thing which matters.
When you do what you love, you will have passion. When you have the passion to do your job, you will be good at it. When you are good at your job, people will love you for it and usually happy to pay lots of money for it.
Don't ever work for money. Money always follows when you do what you love. Money should be the result, not the reason.
Disclaimer: this philosophy works for me but your results may vary. I cannot guarantee results for everyone and cannot be held liable for your life nor financial situation.