The strength of your self image depends on your smile, and it greatly affects the quality of your interactions with others. The following simple exercise will help identify the aspects of your smile that need attention.
Look into a mirror and think of the happiest memory you have. Smile as broadly as that happiness makes you feel. Don’t be afraid to laugh if you want to. Nobody’s watching. It’s just you and your deepest feeling of joy manifesting. Look carefully, then check any of the boxes that may apply to what you observed in the mirror.