Fixing a door that dosen't stay closed

If you have a door that opens by it self, there is a simple fix. The doors swings open because the wall or door was installed out of plumb.

Remove one of the hinge pins by using a nail or nail set. put the nail in the hole on the bottom of the hinge and tap it with a hammer Make sure the door is held in place by someone when you have the hinge pin out so that it does not pull off of the remaining hinge. Set the hinge pin on a cement floor  and hit the middle of the pin with a hammer. This will bend the pin slightly. Reinstall the pin by tapping it down with a hammer. Repeat with another pin if the door still swings open. This will put a little tension on the hinge making it harder for the door to swing open by it self.