Lock it or loose it! (if you have security use it, or your insurance may not pay out!).
You would be surprised at how many people simply forget to lock their front door, lock their cars at night or even locking the back gate. So get into the habit of checking the following before bed:
Check your car(s) is/are locked.
Check back door is locked.
Close and lock the windows.
Lock the mortise lock on the front door.
Set the alarm. Then – and only then – is the time to climb into bed.
Please make sure you lock it!