According the Humanistic Psychologist Carl Rogers, the personality is composed of the Real Self and the Ideal Self. Your Real Self is who you actually are, while your Ideal Self is the person you want to be.
The Ideal Self is an idealized version of yourself created out of what you have learned from your life experiences, the demands of society, and what you admire in your role models.
For example, your parents are medical doctors who are respected and admired in the community, and experience tells you that in order to be happy, you need to be smart and have a high-paying job. Your Ideal Self might be someone who excels in science subjects, spends a lot of time studying, and does not get queasy at the sight of blood. If your Real Self is far from this idealized image, then you might feel dissatisfied with your life and consider yourself a failure.