How Much Should People Be Sharing With Others?

How much should people be sharing with others? I think that's an interesting question, because on the one hand, my instinctual answer is whatever the person is comfortable with. If you are someone who is withholding, if you don't feel emotionally connected, you might have to challenge yourself to share a bit more vulnerably with the people around. And now as I'm challenging myself to be vulnerable, I will speak to the point of how uncomfortable it is.