I hadn't made the connection between Pesach and Yom Kippur but they share this asceticism, and the atonement of Yom Kippur echoes the humility of the Passover "

I hadn't made the connection between Pesach and Yom Kippur but they share this asceticism, and the atonement of Yom Kippur echoes the humility of the Passover "cleansing of the soul" ritual. I've explicitly used the Yom Kippur fast as a tool to chip away at addictions. As a profoundly irreligious person I can still value these ceremonies for secular reasons.