This advice is for those who carry concealed legally and refuse to be victims. (1) Plan ahead. Decide what you will do if confronted by an armed robber, memorize it, practice it, and if the situation ever comes up, ACT THE INSTANT THE OPPORTUNITY ARISES! (2) Play "What if?" games in your mind. For example, when you walk into a 7/11 ask yourself what you would do "if" this or that happens. (3) Bear in mind that during real life armed robberies there are almost always opportunities to take out the robber(s). They usually don't watch everyone all the time. Or they get distracted by something or other. When their attention is momentarily elsewhere, that's the time to ACT! (4) Carry a 100% reliable and effective pistol (or two) loaded with effective ammo, and practice enough to be confident in your ability to prevail. Confidence breeds success. (5) Ignore all the "Oh Lordy, please don't start a gunfight Matilda!" nonsense you see on the net. In my police experience, hardly anyone hit by surprise with a powerful COM upper torso JHP is able to shoot back. If they can't shoot back, there is no "gunfight". (6) Never ever follow orders to lie on the floor face down, or to go into a back room. Your survival probability drops considerably in those situations.