Having a permit to carry a firearm doesn't make you a tough guy. It's not a license to shoot off your mouth, nor is it permission to let your guard down and be careless because, hey, you have a gun. It's a deadly serious proposition that means you have to man up, put on the big boy pants, and let the loudmouth think he won the battle of wits. You have to be prepared to humble yourself to the jackass that wants to be the center of attention. You have to be ready to walk away, and to hell with what anyone thinks.
Because you carry, you absolutely must know that your defensive weapon is a tool of last resort. The gun doesn't make you a bad ass, the gun makes you accountable for your actions*
*Or at least it should, if you're too stupid to not already be accountable for your actions then you have no business carrying in the first place.