I've learned that the things I want are often the exact opposites of the things I say I want.

I've learned that I have to love someone before I can truly be angry at them.

Coming from someone who pretty much never initiates her own handshakes, I've learned that, in an informal setting when meeting a new person, men will shake your hand carelessly as a simple greeting whereas women have a tendency to save it to use as a gesture of gratitude or respect.