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.

Every person I meet is struggling with how to understand themselves and reach their full potential. No one has it fully figured out. It is a life long struggle - -there isn't a precise destination or arrival.

Personal relationships are often based on affection - professional relationships can have affection but they must have mutual understanding, trust and respect.

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.

Passion is the rocket fuel that helps you perform at your best. It helps you get through bad days, injustices, hardships and disappointments. It is hard to perform at a high level for a sustained period of time without passion for what you're doing.

There are multiple ways to solve a problem and add value. There are seldom right answers. So, you've got to use your abilities to diagnose a situation and use your best judgment on what to do and how to do it. You WILL make mistakes - when you do, admit them and go back and try to fix them. I don't know is often the right answer.

Why do leaders fail? Isolation and inability to learn. They are afraid to express doubt, admit vulnerability or seek advice from subordinates. Leaders must actively work to seek feedback and a reality check. They must be open to asking questions and framing issues. As the world becomes more complex and global, the risk of isolation becomes greater. The need for leaders to be open to learning becomes greater. Great leaders will need to ask the right questions and balance inquiry with advocacy.