Shame is the most powerful, master emotion. It's the fear that we're not good enough.
One of the things I did when I discovered this huge importance of being vulnerable is very happily moved away from the shame research, because that's such a downer, and people hate that topic. It's not that vulnerability is the upside, but it's better than shame, I guess.
Many people think of perfectionism as striving to be your best, but it is not about self-improvement; it's about earning approval and acceptance.
The best marriages are the ones where we can go out in the world and really put ourselves out there. A lot of times we'll fail, and sometimes we'll pull it off. But good marriages are when you can go home and know that your vulnerability will be honored as courage, and that you'll find support.