Business and leadership is about the future. What worked five years ago is unlikely to work tomorrow.

Great companies create an environment in which employees act like owners. They do this through clear communication, articulation of clear vision and priorities, coaching and openness to debate/discussion. I would argue that this type of environment helps people to be at their best - and helps the company to be at its best.

To help people with the struggle, I have to reveal my own struggles.

There's a step that leaders need to take; they've got to understand themselves.

The vision must be realistic - it has to be based on clear distinctive competencies. Again, what would the world lose if you didn't exist? A vision is very powerful because it gives you a basis to judge every action you take. Every action should be viewed through the prism of whether it furthers the vision.

Authenticity is critical to leadership. That means trying to be yourself - this involves some self-disclosure, admitting what you don't know and being willing to ask questions.

I loved my career at Goldman Sachs. I believed in business principle number 1: if the client succeeds, our own success will follow. This principle formed the basis for my career and my leadership style.