It is a result of con-flict or stress. The symptom is anxiety or change of attitude resulting from strong uncertainty.
Any conflict displayed by anxiety is produced by an unful-filled desire for gratification.
The truth is, everybody feels this conflict, in various degrees of intensity. If that is what neurotic is-welcome to the human race. Understand that self-denial and restraint are healthy desires. Jesus commanded that you deny yourself and follow him. Do that even though today's philosophy is to please yourself and the world.