In 100 Words or Less
Daniel is 2 1/2 years old and whines constantly. When he whines, he must sit on "the chair" until he stops. Sometimes he'll sit for 10 seconds, sometimes he'll sit for 10 minutes. When he decides he's done, he'll holler, "I'm done crying," and he is allowed off. This strategy works even when we are not near the chair.
We were walking to the car and Daniel started up. Mere mention of the chair stopped Daniel mid-whine, even though his older brother Sam helpfully remarked that he didn't see any chairs around.