Father's Day is upon us, so it seems appropriate to reflect on a few of those fatherly axioms that dads drill into their kids -- er, I mean, "gently instill in their children." There's a reason this kind of advice from fathers gets handed down from generation to generation: It's really good advice. And the thing about really good advice is that it can often be applied across many areas of your life. Such is the case with the words of wisdom I'm going to share with you today -- they can easily be applied to your real estate investing career.