I often think of Robert Frost’s poem about building a wall. He is thinking about what happens when we do this. We can wall things out and sometimes we have to do that to survive. Many victims of abuse can only manage by walling the abuse out. Some have even developed different personalities to not be present themselves. This is the extreme example.
However, we do need to be careful about walling those around us out. Usually what we need for healing begins outside of ourselves. We need others whether in the form of therapist or loving friends/family. We have to be careful not to wall out the help we need. If we are fragile it is so easy to stay inside our protective shield but this is only a temporary solution.
Try and find those who can help to pull you out from behind the wall and eventually tear it down altogether. In that place is healing.