Believe it or not, they like you and want to be helpful as you mature into real leaders. The common good is terribly important. It means the common good for students, faculty, and for the whole University community. You are a part of it, so work for it. Be honest, especially with yourselves.
Integrity is probably the best quality of a leader.
B e open minded. No other attitude makes learning possible. However, they are all wrong. Be fair, even with grown ups. Fairness will win them more than anything else.