I'd like to start this piece with 2 quotes that complement each other:
"To add value to others, one must first value others." ~ John Maxwell
"Before you are a leader, success is all about growing yourself. When you become a leader, success is all about growing others." ~ Jack Welch
The bottom line here is: A good leader "Develops herself (or himself) and Develops others...that's what letter "D" stands for.
I believe that the best leaders want the best for those they lead by encouraging them to be their best. One sure way of helping people be their best is by providing them with opportunities (some of which may be challenges) to develop themselves.
I'm sure like me, you don't disagree with the President on this:
"The greatest leader is not necessarily the one
who does the greatest things. He is the one that gets the people to do the
greatest things." ~ Ronald Reagan
"A" is stands for "Authenticity" for me. Just as letter "A" is the first letter in the alphabets, the first & best thing any leader can do for themselves is to be "Authentic" - real, genuine, credible, true. Yes, true to & for yourself. If you're not true to & for yourself you cannot be truly true to or for anyone else.
We live in a world were there are so many definitions of who or what we should be and if we don't know and are not grounded in who and Whose we are we can easily lose our identity.
We must remain authentic irrespective of the changes and challenges we face otherwise in time, you won't recognize yourself - and many others may not too.