What I've noticed after years of trying to hack my emotional give-away, is that it's really hard to fake being confident when you're nervous, especially around people who know you for a while.
However, when dealing with people who don't know you, you can easily fake being important or nobody, for a short period of time. This is not always useful, and could backfire (especially if you are "elevating" your power), but I've found some limited scenarios where altered first impression gives you an edge.
However, when dealing with people who don't know you, you can easily fake being important or nobody, for a short period of time. This is not always useful, and could backfire (especially if you are "elevating" your power), but I've found some limited scenarios where altered first impression gives you an edge.