Questions on using the urge jar

I love the idea of an urge jar and got myself one to support me managing my urges for after-dinner snacks. Yesterday went great and I was able to put my first marble (well, in my case it’s a chickpea) in the jar. Today something interesting happened: Different from most days, I didn’t really feel an urge to snack after I finished dinner. – So I’m not going to put another chickpea in my jar tonight, am I?