A word to the wise

"repeated acts cause a habit to grow.  If, however, the intensity of the act falls short proportionately of the intensity of the habit, such an act does not dispose to an increase of that habit, but rather to a lessening of it."

"multiplicatis actibus, crescit habitus. Si vero intensio actus proportionaliter deficiat ab intensione habitus, talis actus non disponit ad augmentum habitus, sed magis ad diminutionem ipsius."

     St. Thomas Aquinas, Summa theologiae I-II.52.3.Resp.  Latin from Corpus Thomisticum.