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

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.

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

There are three main areas of focus: vision, priorities and alignment. It is critical to articulate a clear vision - how do we add value based on what key competences? Some leaders fail to be clear enough or fail to update the vision based on changes in their industry and in the world.

If you're the smartest person in the room, it can sometimes be hard to learn to delegate - the person to whom you're delegating will do the task worse than you would - and it will annoy you!

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.

It bears repeating: you don't have to be good at everything.