What are the skills that must be present in a successful Leader?

Skill development, team leader, service business development, maintenance management, workshop management, power plant operations manager, management, dedicated, honest, 

The first quality which a good leader must have is that he/she must be a good listener among with good speaker. because this quality makes him/her able to listen to the views, problems, etc. of his group membeers and after thet he/she will sought out a best solution of that problem.

and the most important think is the  Time Management