In the words of Pope Francis
Fast from hurting and say kind words.
Fast from sadness and be filled with gratitude.
Fast from anger nad be filled with patience.
Fast from pessimism and be filled with hope.
Fast from worries and trust in God.
Fast from complaints and contemplate simplicity.
Fast from pressure and be prayerful.
Fast from bitterness and be filled with joy.
Fast from selfishness and be compassionate to others.
Fast from grudges and be reconciled.
Fast from word and be silent so you can listen.