Don't be afraid to look in the mirror

Sometimes I find myself full of profound feelings of wisdom as it relates to love, life, careers,success, etc. I don't pretend to have all of the answers, but I am typically a fairly insightful source for loved ones' issues. Does that ever happen to you? Your tank is full to run everyone else's errands, but when it comes to your own, you're always on E.  What I've learned from experience, is that advice is easy to come by, and good advice is easy to follow, but we often forget to give the latter to ourselves when we need it most. In my own life, I encounter situations parallel to instances or problems from a friend or family member's past. And at the time, I was able to provide them with some kind of guidance, wiser than even I am conscious of.
Why is it that we are afraid to look in the mirror when handing out pieces of wisdom? Is it harder to follow our own advice because we're afraid to test out these theories? Or is it even more terrifying that we may actually be right and get ourselves out of these unwanted, often unhealthy situations. Perhaps it's the fact that being objective when it comes to our own problems is close to impossible. We are too emotionally involved to see as clearly as we do when we're on the outside looking in. It takes a very skilled and introspective person to be able to step outside of herself and give an objective analysis and unbiased advice to her own cause, but they do exist. I've met one or two. I often wish I were one. But the truth is, I am not. I am the rule in this case, not the exception.
Fortunately for me, I do have friends who are just as wise, and just as successful in objective cases, and who are not afraid to be a mirror for me, one who will talk back.