Group 1 - The core idea of the article emphasizes that personal expectations and assumptions about others can lead to disappointment and emotional pain [6][11][12] - The story of Xiao Ying illustrates how high expectations in relationships can result in feelings of betrayal and hurt when others do not reciprocate [10][11] - The article discusses the concept of "self-centeredness" and how imposing one's standards on others can lead to frustration and unhappiness [20][21][22] Group 2 - The narrative of Lin Xiangfu highlights how clinging to past grievances can lead to a lifetime of regret and wasted opportunities [25][26] - The article suggests that true harm often comes from one's inability to let go of past disappointments rather than from others' actions [24][26] - It emphasizes the importance of recognizing that many personal struggles stem from overthinking and projecting one's feelings onto others [28][32] Group 3 - The article concludes with the idea that achieving a state of "no self" can lead to greater freedom and resilience against emotional harm [34][35]