What can keep a person trapped at the bottom for a lifetime is their sense of shame.

A sense of shame can make a person overly concerned about others' evaluations and opinions, causing them to become timid and achieve nothing in their life. In modern society, the more shameless you are, the better you might develop. In fact, it can be said that the degree of your shamelessness determines what position you can ultimately reach.

As mentioned in Jiang Wen's movie 'You Can! You Go!' : "If you have a good brain and are shameless, you will be invincible."