A big part of leadership is just being comfortable with the fact that some decisions really are only yours.

The difference between rich and poor is becoming more extreme, and as income inequality widens the wealth gap in major nations, education, health and social mobility are all threatened.

Ethiopia's government is doing a commendable job of working closely with donors and humanitarian organizations to educate parents about child marriage, and to support organizations like the Hamlin Fistula Hospital.

As many as half of Ethiopia's girls become wives before becoming adults. But Ethiopia is also a place where lasting solutions to child marriage are starting to make a difference.

A large part of my career is due to perception, what people think what I am or should be.

My early colleagues and myself helped create the life styles of Americans and, by osmosis, of the rest of the world. I found it difficult to reconcile success with humility. I tried it first, but it meant avoiding the very essence of my career - total exhilaration and the ecstasy of creativity.

Sometimes I wish I had taken the Bob Dylan route and sang songs where my voice would not go out on me every night, so I could have a career if I wanted.

I wanted to have a go at a pop career. My first single, 'Baby I Don't Care', was a hit, and the second, 'Bye Bye Boy', reached the Top 20.