Is there a physical flaw that you feel holds you back sometimes?

Like, in maybe being a bit more aggressive in asserting yourself for a promotion or approaching someone you like? Or maybe it makes you a bit shy?

Mines is probably my skin, eczema is very difficult to live with and I don't want people thinking I'm diseased or anything (conditions and diseases are two different things).
Is there a physical flaw that you feel holds you back sometimes?
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