What truly widens the gap between people is often not IQ or emotional intelligence, but emotional maturity. Maturity is not smoothness, much less worldliness, but the ability to view problems from a long-term perspective. Truly mature people do not judge others lightly because they see the complexity of human nature; they do not desperately defend their pride but are willing to accept feedback and iterate quickly; they have emotions but are not led by them, knowing how to leave space for thinking between stimulation and response; they also do not maintain relationships through cold wars and testing but dare to clearly express their needs and feelings. Ultimately, emotional maturity is about gradually turning "how others should be" into "how I can be," shifting attention from external demands to internal development. The essence of maturity is not controlling others but managing oneself well.