Concealed carry
When concealing a weapon on your person you will have an urge to check it by touching, repositioning, favoring that side of the body.
Carry your weapon securely, hide it by disguising it outline, and don't touch, pat, or reposition in view of others. If you weapon has shifted then you need a better holster and go to the restroom out of view to reposition.
This touching will be come habit if you are not careful and it will cost you your life.
I have been carrying a firearm concealed for more than 40 years, both as a police officer and as a civilian. I have never been noticed, exposed.
A special note: If faced with a life or death situation, choose your time to draw carefully. Make it while the bad guy is distracted. You make only have a millisecond to to make the shot or die.