Do you trust your government? Do you trust your neighbors or the strangers you meet on the street? Do you trust the media? Or your teachers? Who we trust is changing. And trust in our institutions and our fellow citizens is in steep decline. That's according to the World Happiness Report. Who we trust can have a huge impact on our behavior and our happiness.  

So what's behind the dramatic changes in how we trust? And can we learn to trust in a smarter way? We ask advice from Rachel Botsman, the Trust Fellow at Oxford University's Saïd Business School and author of How to Trust and Be Trusted.