I have seen Josh quit on the floor when things don't go his way. I recall one game where he took a bad shot or something, Woodson pulled him, he sat on the bench and pouted. He then got back in and decided to just hang out at the three point line and do that stupid thing with his lips because he was upset. It has happened more than once. For every "hard work off the court" article, I watch a game that shows him being a whiny brat.
I think Josh has a lot of potential to get paid and then take it easy. I hope I am wrong, but I have seen evidence against it.