I'm Jewish - we have a day called Yom Kippur in which we fast to cleanse ourselves for the new year. It's also a day in which you are supposed to apologize one last time for any wrongdoings you have done and forgive those who apologize to you.
Despite being Jewish, I went to a Catholic high school, where the main topic of discussion for the first 14 of the 40 days of Lent was "what are you giving up?" I always said "watermelon" because of one of my favourite childhood books: Jennifer, Hecate, Macb----, William McKinley, and Me, Elizabeth by E. L. Koningsburg. If you haven't read it, I highly recommend it. It's one of those young adult books everyone can enjoy.