I keep running into this every few months or so. It always makes me smile because it's so true:
The master in the art of living makes little distinction
between his work and his play
his labor and his leisure
his mind and his body
his education and his recreation
his love and his religion
He hardly knows which is which...
He simply pursues his vision of excellence
in whatever he does
leaving others to decide whether he is working or playing
To him he is always doing both.
- Zen Buddhist Text
If you're any good at what you do, and by good, I mean really good, work is play.