Giving is a risk. Loving is a risk. Kindness is a risk. All demand that we drop our defenses; all allow the recipients of these gifts the opportunity to hurt us.
ETA: Coming back after a long walk, I can see how someone might misinterpret this post. Here's the part I left off...
All these things have risks, but it doesn't mean it's not worth it! You would never get anywhere if you didn't accept the risks.
And a favorite quote of mine (I don't know where it's from):
To be is to be vulnerable.
I kind of read this as the inverse. If you allow yourself to be vulnerable, you are allowing yourself to truly BE.