I saw this on FB of all places and thought it was wonderful.
Looking for something to give up for Lent? Give up resentment and become more forgiving. Give up hatred and return good for evil. Give up complaining and be more grateful. Give up pessimism and become more hopeful. Give up worry and become more trusting. Give up anger and become more patient. Give up pettiness and become more noble. Give up gloom and become more joyful. Give up doubt and turn to God.