"We often hear of people breaking down from overwork, but in nine out of ten they are really suffering from worry or anxiety"

John Lubbock's quote recommends that individuals frequently attribute physical signs of exhaustion to overwork, when in reality, the cause is most likely to be concern or anxiety. This indicates that the physical exhaustion is a result of the psychological pressure of stressing or feeling nervous. Lubbock's quote highlights the importance of acknowledging the underlying cause of exhaustion, instead of merely attributing it to overwork. It suggests that if we can recognize and address the root cause of our exhaustion, we can better handle our physical and mental health. This is an important suggestion that our mental health is simply as crucial as our physical health, which we must make the effort to attend to any underlying concerns or stress and anxieties that might be causing us to feel exhausted.