What do you think is the secret of the success of the most successful leaders?

Thanks 

In my opinion, they are the following factors : 

1. The Team unity 
2. Good followers 
3. Leader culture itself 

Beyond decision making, successful leadership across all areas becomes a learned leader over a period of time.

but above all I would put in the WORK TRUST / ABIT ATTITUDE / THINKABLE / STRAIGHT FORWARD