Make tawba not just for sins you've committed, but also for obligations you haven't fulfilled.
Ibn TaymiyyahRemembrance is to the heart what water is to the fish. And what is the state of a fish that leaves water?
Ibn TaymiyyahPerpetually is the servant either the recipient of a blessing from Allaah, in which case he is need of gratitude; or he is the perpetrator of sin, in which case he is in need of repentance; he is always moving from one blessing to another and is always is in need of repentance.
Ibn Taymiyyah