47 Skills You Need To Survive Homeownership. Pick an Interior Lock: Your 2-year-old is in the bedroom bawling, you're out in the hall, and there's a locked door between you. On the door's knob or on the plate around it, there should be a small hole that's made just for this situation. Take a slim piece of metal, such as a small flathead screwdriver, and slip it in the hole. Compress the spring inside or slip the screwdriver head into the slot on the spring and turn.