So anyway, this advisor looked me in the eye and told me I was absolutely not ready to apply. When I left that meeting, I sat my in my car in the parking lot and BAWLED. (And I don't cry very easily.)
Long story short, that guy never applied to and got into medical school. The 2 doctors I was shadowing at the time both encouraged me NOT to wait. Thankfully, I listened to them, and they were right--I got in. Take that, jerk advisor!
So don't take advice from just anybody.