Our image of self affects which romantic partners we attract. In order to attract the ideal partner, we must be confident in ourselves and confident in our ability to attract that person, portraying an image of someone they would want to date.
The friendships we create and maintain are also dictated by our self-image. They are fueled by the values we have and radiate. A common Spanish proverb says "Dime con quién andas y te diré quien eres." The most appropriate English translation for this would be "Tell me who your friends are and I'll tell you who you are."
Our self-image also affects our professional lives and the opportunities which we receive (or don't receive). Depending on how we view ourselves, opportunities can stay limited and/or nonexistent, or can expand beyond what we ever thought imaginable.
The world is full of MANY realities. Our perception is OUR reality. Therefore, the way we see ourselves in this world will dictate the way in which our lives will be lived and will evolve.