Artscroll: A Touch of Purity by Rabbi Yechiel Spero

If repentance is so important - why is it so hard to achieve it? With his trademark blend of stories that open our hearts and Torah insights that reach our souls, the author of the bestselling Touched by a Story series, gently but firmly leads us on the path of repentance, teshuvah. A revered Rosh Yeshivah struggles to atone for a wrong he'd done years before; a devoted chassid offers to give up his life's dream rather than embarrass his rebbe; a starving young man lights a candle in the worst darkness of the Warsaw ghettogain a new understanding of Selichos, the penitential prayers;