Self-acceptance begins in infancy, with the influence of your parents and siblings and other important people. Your own level of self-acceptance is determined largely by how well you feel you are accepted by the important people in your life. Your attitude toward yourself is determined largely by the attitudes that you think other people have toward you. When you believe that other people think highly of you, your level of self-acceptance and self-esteem goes straight up. The best way to build a healthy personality involves understanding yourself and your feelings.