I have always felt that a person's life is like looking for a few candies in a sea of suffering. When you are young, you have great strength, you can swim calmly, and even your flopping posture is calm. But in the future, you must understand that your strength is limited, you must relax in a moderate way, and your strongest will must be used in the roughest waves.
Concept: The hardest things to say are the first greetings and the final goodbyes.