Many people find it much easier to put up walls to keep their feelings/emotions and difficulties to themselves, and in doing this they keep others from seeing or knowing how they really feel.
For those who feel alone or no-one cares about them, they may even subconsciously build up walls to hide their feelings/emotions, just to test and see if anyone cares enough about them to try to break though their wall.
Even if you build walls to keep your deeps feelings to yourself, God will break down those walls because He always care more than just enough about you!
#deep and thoughtful
This is very true Dorothy