In the quote from Haruki Murakami's "After Dark," the speaker reflects on the perception others may have of someone who appears to be self-sufficient and composed. This notion suggests that people may assume that a person is managing their life well, leading to a sense of neglect in emotional support, as they believe that individual is fine on their own.
However, the quote also highlights the complexity of personal struggles that often go unseen. It points out that beneath the surface of apparent stability, there may be moments of doubt and turmoil. Just because someone seems to have everything under control does not mean they do not face their own challenges and need support from others.