Every strength is also a weakness: Bill Clinton's charm. George W. Bush's self-confidence. Barack Obama's analytical capacity. This applies to all of us, not just to presidents. You can't have strengths without weaknesses any more than you can have a building without a shadow. What separates good leaders from great ones is that great leaders recognize their weaknesses and actively work to transcend them.
Chris Christie's strength — and his weakness — is his tenacity (his record as U.S. Attorney in New Jersey was remarkable). It's what has allowed him to get things done, and it's also what may paralyze him going forward.
There's an expression in leadership training — what got you here won't get you there. The manager who was promoted because of her ability to excel personally will have to stop executing and start influencing. Personal achievement, which had been an asset, becomes a liability. What got you here won't get you there. It's time to stop walking and start flying.
Chris Christie is in the middle of this transformation. Let's hope he has some good coaches who can help him, but let's also use his example as an opportunity for our own reflection.