What are the most important ethics or values a good leader demonstrates?

He must have a clear picture about his/her speaking and practical doing in his life regardless he/she is occupying a great position in his/her company. 

A good leader have proactive approach to meet their problems and must focus on the long term goals .he always first listen and then take a step towards final decision .

One of the most important factor is to understand the behavioural aspects of all the team members and act accordingly

the most values of a good leader is having self discipline