In a sense, we're all fractured characters. We can compensate for our weaknesses, but I don't think that we can turn them into strengths as strong as our natural strengths. I think a portion of wisdom is identifying what our weaknesses are, and then when confronted with a situation involving that weakness, to carefully solicit and consider the advice from others we consider strong in that area before making a decision, even if we decide to follow another path. That quality also makes a good Manager.
The other thing is no matter how strongly we feel that we are correct, at least keep in the back of our mind that we could be wrong, and anticipate the need for alternative solutions (i.e. have a Plan B and a Plan C). Don't overly second guess yourself, but at the same time don't be so rigid that you stick to a tactic that has become an obviously losing one. Adaptation to changing circumstances or new information can be the difference between success and failure.
/sigh I've read too many war books.