An example I had with positive reinforcement was when I was a child. My mother tried unsuccessfully to get my sisters and I to make our beds everyday. It did not work until she came up with the idea to pay us $1 per day to make our beds. It didn’t have to be perfect, just pulling up the covers was acceptable. In order to earn the dollar, it had to be done immediately upon waking up. I am the youngest sibling, and I was the only one who did this for a month and earned $31. My other sisters wouldn’t do it but the one sibling started to realize she should make her bed when she saw how much I got paid. This went on for several months until my Mother said she was no longer paying for bed making. My Mother decided to do this because she read that it takes 21 days to establish a habit. By then, it was already a habit that was not hard to do, even when there was no money involved. Now many years later, I still make my bed in my college apartment.