It's funny, by putting up walls, you think you're protecting yourself, but you get to live less.
If you're hiding behind a wall, then you can't see over it.
You're depriving yourself of so much if you're trying to be too aware of what you're putting out there.
If you feel someone breaking those walls down, let them.
Those are the people that you need to find in life, rather than people that you're just comfortable with.