Everyone has something physical about them that makes them self-conscious – we’re such an appearance-obsessed society that it would be weird if we were completely impervious to the thousands of ads we see a day. Maybe our teeth aren’t perfectly straight or perfectly white. Maybe we’re overweight or underweight. We might be shorter than average, or taller than average. Maybe we have unruly hair, or no hair at all.

The surprising truth about our obsession with appearance is that, by and large, we are much more self-critical than we are critical of others. A multitude of “imperfections” can be masked by one thing: confidence. Most of the techniques people use to try to hide what they’re nervous about – covering their mouth, slouching down – actually backfire and draw attention to the very thing you’re trying to mask. What actually works is acting confident: good posture (no matter your height or body type), smiling (regardless of teeth status), being natural and relaxed.
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Source:I'm Looking for a Human Being