Religious practices are rituals and ceremonies as customs that have evolved through history as directions in its religious doctrines or adopted by the preachers of the religion.
That all depends on what religion you practice and what you believe in. I am Catholic so I would disagree with that only because that's not what I believe in.
The holiest Jewish holiday is Shabbat, which occurs every week. Here is a list of almost all of the major and minor holidays: 1 Rosh Hashanah - The Jewish New Year 2 Aseret Yemei Teshuva - Ten Days...