Back in the day, when I was 21 years old, after I had been studying in Israel for about a month, I remember standing on a rooftop in the Old City of Jerusalem. I had that burnt-happy-tired feeling that comes from partying for consecutive days on end, and I thought to myself: "I am in the Old City of Jerusalem hanging out with Orthodox Jews, why do I feel like I am partying all the time?" Then I began to count all the Jewish holidays and festivals I had participated in, and I realized that Judaism was a religion filled with celebration. It was during this time that I learned that there was so much more to being Jewish than bagels and lox, the Holocaust and my bar mitzvah, which is basically what being Jewish meant when I was growing up.  That unbeknownst to me for most of...