You can express your generosity in ways that are virtually limitless. This was what I wanted to convey in 'Giving 2.0' - that whether you have $10 or $10 million to give, if you identify the right opportunities and make the most of your resources, your impact can be tremendous.

How I see my career is very much as an entrepreneur in the field of philanthropy.

Online, you can become much more than a reactive donor - you can become a proactive, strategic, collaborative philanthropist, improving your giving every day by tapping into the wealth of philanthropic resources available at the tap of a keyboard or the click of a mouse.

Of course, giving is deeply emotional. But supplementing emotion with research makes it more likely that a gift can have a bigger impact. It's like any investment. After all, you wouldn't put funds into stocks or bonds without understanding the potential return. Why wouldn't you do the same when investing in society?

For me, leadership is making a difference. It's using your agency to bring about change.

I find that when you lead with vision and values, engaging employees and showing them that values are just as important as profits, everyone comes on board. And not only do they come on board, but they connect to their own individual creativity.

Leaders who master emotions can rob us of our capacities to reason. If their values are out of step with our own, the results can be devastating.

Without boxing, because of my neighborhoods, who knows what would have happened to me. It was always about following the leader. And I definitely was not a leader. Boxing gave me discipline; a sense of self. It made me more outspoken. It gave me more confidence.