Yes, I do worry about my safety from time to time, espeically since I keep such odd and inconsistent hours. I carry my keys clenched and poking out of my fist and say a St. Michael prayer when walking out of work in downtown Norfolk, and do the same when I come home. If my roomate isn't home, I clear the house. Yep, you got it: turn on all the lights, look in the closets and bathtub and everything. Am I neurotic? no...just single and scared with an overactive imagination. I always leave a light on...and a different light each time when I know I will be out late. put a security sign in the window...may at least deter some folks.
I suspect that if we lived closer we would be really good friends!
I used to do the same thing with my keys and I still do with the St. Michael prayer! My dad, who constantly worried about his daughters' safety in the big bad NYC, would give my sister and I weekly drills on personal safety. Much to my mother's dismay these involved: how to disable your opponent, the best places to do the most damage, shank vs shiv*, the pros and cons of homemade weaponry. I think that he was one bad day away from being a doomsday prepper.
But in all seriousness, what he did teach us was to be aware of our environment, to quickly identify potential threats and most importantly to ALWAYS THINK and not let fear overcome reason in tense situations. This saved my sister during an assault in which she used her key to hurt the guy and get away and me when the store where I worked was robbed at gun point (we were both teenagers at the time).
I also agree with Lauren and Lina, once you take care of the practicals....leave those anxieties in God's providential care. As Venerable Catherine McAuley said, "While
*There are subtle but important differences between the two.