Analysis:
This sentence is ostensibly talking about eating, but it is actually the embodiment of the optimism of the ancients. When you encounter setbacks in life, even if you never think about difficulties or unbearable pain, don't complain about your misfortune, because misfortune is nothing in the face of strong vitality.
On the contrary, we should face these setbacks bravely, face them squarely and think calmly and rationally about how to solve them. Only in this way can we overcome these setbacks, which will also make our life more solid, wear-resistant and resilient.