" Sooner or later, someone will say a no to us that we can’t ignore. It’s built into the fabric of life. Observe the progression of nos in the life of the person who resists others’ limits: the no of parents the no of siblings the no of schoolteachers the no of school friends the no of bosses and supervisors the no of spouses the no of health problems from overeating, alcoholism, or an irresponsible lifestyle the no of police, the courts, and even prison Some people learn to accept boundaries early in life, even as early as stage number one. But some people have to go all the way to number eight before they get the picture that we have to accept life’s limits: “Stop listening to instruction, my son, and you will stray from the words of knowledge” (Prov. 19:27). Many out-of-control adolescents don’t mature until their thirties, when they become tired of not having a steady job and a place to stay. They have to hit bottom financially, and sometimes they may even have to live on the streets for a while. In time, they begin sticking with a career, saving money, and starting to grow up. They gradually begin to accept life’s limits. "
― Henry Cloud , Boundaries: When to Say Yes, How to Say No to Take Control of Your Life