I wouldn't walk across the street to piss down Don Shula's throat if he was on fire.
There's a big difference between confidence and conceit.
There is a difference between conceit and confidence. Conceit is bragging about yourself. Confidence means you believe you can get the job done.
Talk is cheap, let's go play.
Nothing's dangerous if you know what you're doing.
Specialists can never practice their specialties too much. The danger is in not practicing enough. Make that mistake, and soon you may not be in the specialty business anymore.