I came across this passage while reading "The ABC of Enlightenment" by Osho and I simply had to share it.
"If it brings joy, do it. Whatever brings joy to you will bring joy to others too. Sometimes it may not be very apparent, but this is the fundamental law: that which brings joy to you is bound to bring joy to everybody, and that which brings misery to you is bound to create misery for others, sooner or later. Be utterly self-full, and remember that in being self-full, you are serving humanity. There is no other service. All that goes on in the name of duty is ugly. Duty is a four-letter-word - avoid it! Do things out of joy but never out of duty. " Osho