Perfection is the path to great achievements. Yet, since life is rarely perfect, The key to happiness lies in managing stress, and learning to forget is an effective way to do so. Life requires the strength to pick things up, but sometimes, the wisdom to let go is even more important. As the poem says: 'Spring has flowers, autumn has the moon, summer has cool winds, winter has snow. If no trivial matters weigh on your heart, every season is a good time in this world.'
The past cannot return, and what returns is no longer perfect. If you do not remain strong, who are you showing weakness to? With complex emotions, we examine a complex life and walk a complex path. Perhaps we should adopt an indifferent attitude and live a life that accepts things as they come. Occasional reflections on the past may make us feel like we are moving backward, but expectations, waiting, and failure are inherent parts of life's entanglements. As the saying goes: It's not that we are unsuitable; rather, they are more suitable for you.
The famous 'barrel theory' once stated that a barrel's capacity is determined by its shortest stave. This theory was indeed effective during the industrial era, but in today's global internet age, its practicality has largely diminished.
Don't be overly sentimental; life will not smile upon you just because you are young.