Envisioning a wall in your dream could mean a significant amount of solitude and boundaries. Walls can be built to keep someone out of a certain place, but walls can be also used to keep someone in. Thus, if you see walls in your dream, it reflects the sensation of being trapped inside where you are being kept in confinement. That wall is what keeps you trapped in, serving as a limitation and hindrance for self progress.
The walls in your dream can symbolize protection where you hide behind them in order to shield yourself. You refuse to be left out in the open and by doing so, you believe others won’t be able to harm you.