>>14259548>19111911s are single action, meaning you either need to cock it prior to firing or you need to carry it cocked. Both are downsides.
The main consideration for an everyday carry piece is ease of carry; a gun that you do have always works better than a gun you don't have. A big gun or cumbersome gun that you find reasons to leave on the nightstand when you head out for the day is a bad carry gun no matter its other properties.
What I recommend is a small snub-nose revolver or pocket pistol (sub-compact (whatever)). It should be no bigger than your hand if you can help it. It should have at least 5 rounds in it and shooting at least .380 auto or a bigger/faster cartridge. I highly recommend Double Action or SA/DA (double action is when pulling the trigger both cocks the hammer and releases it, as opposed to Single Action where these are separate operations). Striker is fine but if you want to feel safer, DA have heavier triggers and more would need to go wrong for it to fire on its own.
Then, get a good holster (Kydex is most common), find a comfortable carry position and get used to carrying. Lots of people buy pants one size too large for this purpose. Empty your gun and practice drawing from concealment in the mirror. Go to the range and practice accuracy. Practice point-shooting (look it up) if you can find a range that lets you. Speed of draw and making hits on center mass are the other two biggest factors in successful gunfighting.
This will maximize your chance that you'll have your gun when you need it and that your gun will be effective on whoever attacks you.
