The more you look into health and health inequalities, you realize that a lot of it is not due to a particular disease - it's really linked to underlying societal issues such as poverty, inequity, lack of access to safe drinking water and housing. And these are all the things we focus on at CARE.

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.

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