Ice Cream is an Indicator of Happiness

I ate some ice cream today. I haven't had ice cream in a long time... too long. We bought ice cream in November, and it has sat in the freezer for months without being touched. But today I wanted ice cream. I think it's because I only want ice cream when I'm happy. Since I haven't been happy for several months, I haven't craved ice cream. But today I wanted ice cream, mint chocolate chip ice cream, and it tasted really, really good. :-) I guess I'm feeling happy again.