Well next time you lock up before you leave double check that tell yourself "I locked up, I locked up, I locked up"

By going back to work you may have avoided a confrontation with a mugger or something- think positive- having a job where you have the responsibility of locking up is a blessing in itself

Check twice before you leave instead of getting home half way before checking twice.

I felt like I had to vote YDI for your lousy confusing grammar.

Well i'd rather have an employee like you who double checks rather than one who says "oh well" and just hopes they got it. Good for you for being safe. I give you 10 safety stars out of 10

At least you've got yourself in a locked position far as safety goes! :p

That would worry me, too! It's another thing to bug you, along with the stove being turned off or locking the front door after you've gone to bed. No problem, OP, we have all done it at one point or another. I've found that making a check list at the end of my shift helps relieve a ton of stress after I've gone, that way I don't have to worry if I forgot something or not.

Since something like locking up is such a routine thing, people usually don't think about it when they do it and that's why they forget if they did or didn't. Next time, when you're walking out the door, just pull it (or push it, if it's a door like that) to make sure it's locked. I've done the same thing before!

This type of thing happens to me, too. Except I panic about much smaller issues. The most common incident is setting my alarm clock; it usually takes me an extra 30 minutes to fall asleep because I'm afraid that I somehow didn't set my alarm properly. Don't ask me how I continue to do this over and over again, because I really don't know. Ah, the life of an irrational female.

Film yourself locking up. Then check when your in the car going home. Simples.