[Life Hack] How do I overcome feeling inadequate of my physical shortcomings?

CaptionLet's just say I'm not a midget, but I'm short enough to be mistaken for one.That and a crippling sense of self-criticism has completely shattered my self-confidence. Outside of my tiny circle of expertise, I find it very hard to strike conversations, or feel at ease with myself, because I'm always self-doubting everything I do or say. Compound that with feeling physically small ("unmanly") and that's me.I really really want to get out of this. I'd appreciate any advice -- you can be as harsh as you want, I've no self-worth to salve anyway.