How can I have motivation to work?

I only need money for living like house rent, food. I don`t want to go restaurant and have expensive food, I don`t want cloth that costs a lot. I don`t want anything. If I work lot, I can save lots of money in my bank. But some people will say, stop keeping your money, spend it. So I lather not to work. I don`t want money. I can live very poor.