BRVC

Being on a team is a commitment and commitment requires dedication to not only the team and the sport, but to yourself. 

Coachability is a great trait to have. It will allow you to grow as a player and also a person. 

The book says "You play how you practice." Therefore if there is no work ethic both on and off the court there will be no progress. Why play a sport you love if you aren't going to give 110% effort all the time.