Fear makes the ground of your unconscious mind fertile for hypnotic suggestions. Using fear, you can en-trance an entire nation of people and then plant any suggestion you want, and they will follow it without questioning the logic of it.
Imagine, if you will, an insecure young lady in a relationship, she is terrified of being alone, and her partner tells her over and over, “You will never find anyone if you leave me,” Eventually she does leave, but finds it so difficult to establish a healthy relationship. She doesn’t question the logic behind her belief that “Good men just can’t be found,” and just carries on obeying the command to “Never find anyone” because she met the condition of leaving that man.
Or how about being told at a time when you’re afraid of the future that, “Don’t worry, you will always have just enough, you’ll see,” and then you wonder why you can’t get beyond just “making ends meet”.
This is one of the main reasons why you need to beware of fear, don’t make life changing decisions based on fear if you can avoid it, don’t let someone use fear to persuade you. As someone once said, FEAR is False Evidence Appearing Real.