Although selfies are somehow seen as an expression of vanity, studies show that snapping a photo or two could potentially boost your self-esteem. Of course, this type of confidence does not mean that validation should come from external influences. But sharing photos on social media and getting positive feedback from your trusted community can be a powerful instrument to reaffirm the self-worth that already exists within you. Selfies — whether shared or kept private — have been linked to stronger, more tenacious moods. Experts say that taking photos of oneself can help make them feel comfortable in their own skin, which then leads to the improvement of their overall frame…