Bubbers 44 has hit the nail on the head....it is discipline. It is knowing that their is a ''shortcut" and not taking it because there can be a fatal flaw when things aren't perfect.
Going to an airport you've never been to? Take the full ILS and don't just head for the nearest airport.
Ask for a radar point out even on a beautiful day.
And, a real killer, ask for progressive taxi instructions if the airport has construction or something odd going on.
And I think the biggest one...if the weather is bad, always wait 15 minutes. If it gets worse, you are vindicated. If it gets better, you were just waiting for a better ride for the passengers.