If your door or lock sticks, forcing you to push or pull as you turn the key, it’s an easy fix. Use a pencil and rub the surface of the key with the lead and then put it in the lock. The graphite from the pencil will lubricate the lock, and it should easily open.
Speaking metaphorically, if lead in your pencil is a problem I suggest you ask your doctor about boner pills.
Glad I could help.