If you follow all the rules your coach puts in place, there should never be a problem with team discipline. That’s the easy solution. If you find yourself in the coach’s doghouse for breaking a team rule, do the right thing: Apologize to the coach. Take your punishment and move on. Problems only get out of hand when players begin to challenge the coach’s disciplinary system.
If, however, you feel you were unfairly singled out for disciplinary action, then ask to speak with the coach privately. Explain your side of the story. A good coach will listen to your argument before making a final decision. Sometimes the coach will decide not to discipline you after hearing your side. Either way, once you have had your say, let the coach make the decision and move on. In the long run you are always better off learning to adjust to the coach’s team rules.