人生百年,仅5个20年而已。第一个20年,求学为主;第二个20年,事业为主;第三个20年,是人生最为忙碌而艰难的时期,单位、家庭、老人、子女、社会、工作,无不需要兼顾。唯有第四个20年才是无忧无虑,无牵无绊,享受人生的黄金时代。享受人生的三大条件为金钱、时间与健康。对大多数人而言,第一个20年缺乏的是金钱,第二、第三个20年缺少的是时 Hundred years of life, only five 20 years only. The first 20 years, mainly to study; the second 20 years, the cause of the main; the third 20 years, is the life of the most busy and difficult period, units, families, the elderly, children, society, work, all need to take into account . Only the fourth 20 years is carefree, no trip-free, enjoy the golden age of life. Enjoy the three major conditions of life for money, time and health. For most people, the first 20 years lack money and the second and third 20 years are missing