2 Quotes by St. Mark the Ascetic

When you are wronged and your heart and feelings are hardened, do not be distressed, for this has happened providentially; but be glad and reject the thoughts that arise within you, knowing that if they are destroyed at the stage when they are only provocations, their evil consequences will be cut off, whereas if the thoughts persist the evil may be expected to develop.

If you want to do something but cannot, then before God, who knows our hearts, it is as if we have done it. This is true whether the intended action is good or bad.