Many customs required time and insistence to change. For example, I used to open light for the whole day. Only today I thought of something, I turned off the light in the day. In order to achieve no impact, what I should do is not only to reduce energy or save resources but have the sense to change many basic behavior.
I opened windows and turned off the fan before sleep last night to save energy.Also., I turned the light off before leaving the room. While after washing hands, I closed the tap closely to save water. And today I refused to use plastic cup to get coke. Such way can help to reduce pollution that may happen.