They see a need and find a way to get it accomplished. They may be committed to self-glory or money, but they are committed to achieving their goal. A good leader has learned that worthwhile projects often take time or are totally ongoing and seemingly never ending. This requires organizational, prioritizing and management skills . Promptness is a must.
Workers have more important things to do than to wait on someone or some bit of information.
If the leader is focused on the task, he will be on time and will be prepared and expect the same out of others. The leader sees the big picture, yet is able to break the goal down into separate, manageable tasks and delegate them to others and still keep the big picture in mind. It takes a lot of fortitude to see the task to the end or until it can be passed on to a successor. The path is often filled with distractions and side paths. It takes a focused leader to ignore the distractions and keep the goal in mind and to keep that goal in focus for everyone else.