I have a couple of dear friends who are deathly afraid of being alone. They worry about it. They cry—hard—when they think about it. The source of this fear started when they were very young; their parents were not loving and literally made them feel worthless. That feeling of worthlessness stayed with them into adulthood, and affected all of their decisions and relationships.
What does this have to do with “learning more to earn more”? A lot. Read more