Respect

Respect is a key ingredient of managing people. People like to respect their boss. Respect comes from making tough decisions which are fair and explained fully so that they can understand the reason. (Not that they will always agree but they can understand !)
Think about it...you don't like bosses you disrespect, we have all seen them - the ones who give in to the wildest demands. Well learn from that and build your own respect levels. If bosses say yes all the time the boundaries are destroyed and people don't know where they stand.

"Learn from the people
Plan with the people
Begin with what they know
Build on what they know
Of the best leaders
When the task is accomplished
The people all remark
We have done it ouselves"