Some have a magnificent voice and it doesn't much matter what they say you listen. James Earl Jones.
Some have a wonderful sense of humor and insight and they captured you 24/7. Will Rogers.
Some inspire you and educate you and comfort you. FDR, Winston Churchill, Eleanor Roosevelt
Some amaze you with their ability to shine through adversity. Helen Keller.
How did they become what they were during the lives? I suppose through facing trouble bravely and coming through stronger wiser better. And then sharing it.