The first place when we have started our way of life is maternal womb. The heat shell that protect us from external world. But then we grows and create our own one. A big bubble that can be useful as emotional protection capable to be like shield agains negativity and prevents to show nudity of our soul to others. Or it can be a fence that gives us a comfort place but separates from opportunity of life, creating just a wall of fear, which simply become an obstacle to growth.