"Brick walls" refer to obstacles or challenges that individuals encounter in their personal or professional lives. These barriers can be physical, emotional, or situational, often hindering progress or success. The term is commonly used in psychology and self-help discussions to illustrate the difficulties people face when pursuing their goals. In the context of education, Randy Pausch, a professor known for his "Last Lecture," famously used the concept of brick walls to emphasize that they are not meant to stop us but to test our determination. Overcoming these walls can lead to personal growth and resilience, encouraging individuals to find creative solutions to their problems.