I usually try to save electricity in daily life. For example, I turn off lights in the room we don't use in my house. It is very easy way to save electricity, I think. I also try to economize on the use of water. We are apt to forget to turn the tap off, so waste of water often happens. Electricity and water are both precious source, so we have to save these material.
 I notice some person often use air conditioner westely in summer. Of course, we need to keep safe temperature because it is necessary thing for our body. However, many people set up temperature at too cool. It isn't good thing for both our body and environment.