Teach them that all actions have consequences, and that the skills they learn in the dojo should carry them in all aspects of their lives, from school to the workforce. Teach them that their responsibility is to themselves, to the dojo, and to society and that their actions will reflect either positively or negatively to all of the above. Make sound and timely decisions. Indecision has destroyed the morale of more armies than just about any other factor. When a decision is called for, consider your options, use your best judgement and make the decision.
Leaders are decisive.
Great leaders through history have made decisions, and even if that decision was incorrect, they took responsibility for it. Today, in an attempt to avoid the taking of responsibility and making the tough decisions, many have embraced the numerous management fads like Total Quality Management in which decisions are reached by consensus. Unfortunately, leadership doesn't work by committee, but with one lone person at the top who has accepted the responsibility of leadership. As a leader you must take charge of yourself, the situation, and make the tough decisions and live with the consequences of that decision. Set the example.