A wise manager knows that it is sometimes more important to listen than to talk.

If your endeavors result in success of the company in a continuity of at least a few years, you are a successful manager. If other companies follow your business approach, you are certainly an important manager with leader characteristics.

Motivating employees to work at their full potential is the main premise of successful management.

Good managers don't set a goal to increase efficiency, but rather an implementation of business process improvements that result in higher efficiency as well.

Managers can use power, money or certain circumstances to achieve short-term results. However, motivation is crucial for achieving long-term results.

You asked about important factors in management. I think the answer is quite simple – the most important factor is motivation.