This week, the world fell for actor Andrew Garfield's show of vulnerability as he talked about his grief for his late mother on Sesame Street.

Emotional vulnerability has been having a moment in our culture, and for good reason. Being real helps us connect with others and can free us to be ourselves. 

But it's very hard to do for many people, and can be misunderstood or abused. What does it really mean to be vulnerable and how can you do it protectively?