Core Viewpoint - The article emphasizes the importance of closing doors to past grievances, desires, and regrets in order to find peace and contentment in life, particularly in the later stages of life [6][7][58]. Group 1: Closing the Door on Grievances - It is essential to reconcile with oneself by letting go of past grievances and burdens that weigh heavily on the heart [8][10]. - Holding onto past misunderstandings and grievances consumes one's energy and time, blocking the path to happiness [11][12]. - The story of Su Shi illustrates that forgiving those who have wronged you is not about them, but about freeing oneself from the past [21][22]. Group 2: Closing the Door on Desires - True wealth comes from knowing contentment, while excessive desires lead to a sense of poverty [27][28]. - The example of Ji Xianlin shows that a simple life focused on what is necessary can lead to spiritual richness and peace [36][40]. - Focusing on what one has rather than what one lacks fosters a sense of fulfillment and stability in life [38][39]. Group 3: Closing the Door on Regrets - Dwelling on past regrets can hinder personal growth and happiness; it is better to accept the past and move forward [44][46]. - The narrative of Lin Qingxuan highlights the importance of transforming regret into motivation for living fully in the present [53][54]. - Embracing the present and letting go of past disappointments allows for a more fulfilling life [56][58].