使用了不定式短语 to avoid wasting your youth 作为目的状语，结构紧凑且逻辑清晰。
Long ago, there was a wandering artist who, despite being only in his forties, was skeletal and withered. A doctor diagnosed him with terminal liver cancer. On his deathbed, he summoned his sixteen-year-old son and admonished him: “You must study hard. Do not follow my path of wasting your youth, leading to no achievements in old age. When I was young, I was aggressive and fought constantly. My days and nights were reversed, and I indulged in tobacco and alcohol, contracting a fatal disease at the prime of my life. Remember this deeply and do not repeat my mistakes. I did not receive much education and have no grand theories to teach, but you must pass down this saying: 'If you do not strive when young, you will have no achievements when old.'”
After speaking, he took his last breath. His sixteen-year-old son stood beside him, bewildered and barely comprehending the weight of the words.
As he grew up, his son continued to cause trouble in taverns and casinos. On one occasion, a conflict with a customer escalated, and he inflicted fatal injuries, leading to his arrest and imprisonment. After being released, the world had changed. He realized he could not return to his old ways but, lacking any marketable skills, he could not find legitimate employment. He was forced to return to the countryside, surviving on odd jobs.
Because he failed to understand his father's final words during his youth, he neglected his personal life, not getting married until he was nearly fifty. As he aged, he gradually came to appreciate his father's parting advice, but it was already too late. His physical strength declined year by year. Facing a family he could barely support, his heart was filled with endless remorse and sorrow.
从前，有一位流浪艺人，虽仅四十余岁，却骨瘦如柴，面容枯槁。医生诊断他已患肝癌末期。临终之际，他将年仅十六岁的独子唤至床前，千叮万嘱：“你要好好读书，切勿像我般少壮不努力，导致老来无成就。我年轻时好勇斗狠，作息昼夜颠倒，烟酒不离身，正值壮年便罹患绝症。你务必铭记在心，莫要走我的老路。我未受过多少教育，无甚高深道理传授，但你要记住将‘少壮不努力，老来没成就’这句话世代相传。”
话音刚落，他便咽下了最后一口气。十六岁的儿子站在一旁，神情懵懂，似懂非懂。
成年后，儿子依旧在酒家与赌场惹是生非。一次，他与客人发生冲突，因出手过重致人丧命，随即被捕入狱。出狱后，昔日人事已非，他意识到不能再走回头路，却因无一技之长，无法找到正当工作，只好决意返回乡下，靠打零工勉强维生。
由于年轻时未能体悟父亲的遗言，他耽误了终身大事，直至年近半方才成婚。随着年岁渐长，他逐渐明白父亲临终前的教诲，但此时已悔之晚矣。他的体力日渐衰退，一年不如一年，面对摇摇欲坠的家庭，心中充满了无尽的忏悔与悲伤。
"Time is made of minutes and seconds; mastering moments achieves greatness."
"What use is my innate talent, if I have wasted twenty years?"
"Life is but a mayfly; in the blink of an eye, black hair turns to white."
"Cherish every day for learning, and act without delay."
"Do not undervalue the evening; it is as effective as the morning for achieving success."