When you think that you are beautiful, you are liable to think that you are more beautiful than others, and such a thought is not a beautiful thought. To recognize or criticize ugliness and inferiority in others is to create the inferior and the ugly in yourself, and what you create in yourself will sooner or later be expressed through your mind and personality.
Use the imagination to picture only what is good, what is beautiful, what is beneficial, what is ideal, and what you wish to realize. Mentally see yourself receiving what you deeply desire to receive. What you imagine, you will think, and what you think, you will become. Therefore, if you imagine only those things that are in harmony with what you wish to obtain or achieve, all your thinking will soon tend to produce what you want to attain or achieve.
The more you think of what is right, the more you tend to make every action in your mind right. The more you think of the goal you have in view, the more life and power you will call into action in working for that goal. The more you think of your ambition, the more power you will give to those faculties that can make your ambitions come true. The more you think of harmony, of health, of success, of happiness, of things that are desirable, of things that are beautiful, of things that have true worth, the more the mind will tend to build all those things in yourself, provided, of course, that all such thinking is subjective.