In real estate, they say the three most important factors are location, location, location. In public speaking, the three most important factors may very well be preparation, preparation, preparation. However, that doesn’t mean we have to burden ourselves with setting unrealistic goals of knowing everything. In this quick, six-minute Pocket Sized Pep Talk, I'll remind that even if you could know everything, it could make you susceptible to damaging your credibility, and I’ll tell you why…