There are so many ways that your body can reveal your true thoughts about you. Sometimes, you can even overcompensate. Emotions can come out such as a rebelliious attitude (which can be effective) but the best way to know what others think about your confidence is to get feedback from those around you. Be willing to listen and see if that can match your vibration in which to build confidence.  http://loaradionetwork.com/body-confidence