Perhaps this quote needs further clarification, otherwise it would be misleading.

What other people think of us may provide windows of opportunity for us to discover our weakness.
Self-reflection, sometimes involve listening to what others have to say about you, though not all may be useful, some would be inspirational.


Just to add some, the following might not be directly relevant, it would somehow echoes the important of thoughts.

" Other best thoughts come from others" - Ralph Waldo Emerson

" The world we created is a product of our thinking; it cannot be changed without changing our thinking" - Albert Einstein