Tedium is the grandson of despondency and the daughter of laziness. To drive her away, exert yourself in work and don’t be lazy with prayers: then your tedium will pass and zeal will arrive. And if you add to this patience and humility, then you will rid yourself of many banes." Sometimes posing his own question: "Why do people sin?" the Starets would answer: "Either from not knowing what you have to do and what you have to avoid; or if they do know, they forget, and if they did not forget, then they are lazy and become despondent. Conversely: as people are very lazy when it comes to performing good deeds, they very often forget their main responsibility that of serving God. Laziness and forgetfulness leads to extreme senselessness or ignorance. These are the three ogres: despondency or laziness, forgetfulness and ignorance, from which the whole human race is bound through the shackles of indecision. Whereupon, carelessness follows with all its multitude of evil desires. That is why we pray to the Queen of Heaven: "Most-holy …"
Elder Ambrose of Optina