This is one basic and the most common thing anyone of us should follow, but many a times we tend to forget it. Please ensure that all the lights in the house are switched off before you leave the house. it will lead to a saving of electricity and you will also contribute towards the energy saving of the nation. If you go out of your house, before locking the door just check that all the switches are closed. This is a good habit as well as is a necessity. Therefore, do remember to switch off all the lights before leaving the house.