Differentiation

I certiantly recognize myself as unique. But how do I really differentiate myself from others that are similar, at work, at a certian skill, a capability, or a contribution? Is that just more marketing? Is success based on presented and perceived differences versus actual differences and value?

It starts with the belief (and truism) that you are different, then experience, results and advertising (?). This is a walk to find one's self, and tell everyone along the way what you have found out.