From Resentment to Forgiveness By Francisco Ugarte:

Fr. Cartwright, is gifting each family with a book to read during Lent. From the author, “We all want to be happy. Perhaps the greatest obstacle to happiness for most people is resentment. This short book confronts this problem, studies it, and offers solutions to resolve it. The study of forgiveness is a difficult matter, but it is even more difficult to live this virtue in practice. At the same time, it is one of the most important resources for the attainment of happiness, because it can resolve, in a fundamental way, the principal obstacle to happiness: resentment.”