The ancients said, “Cows drink water and produce milk, while snakes drink water and produce venom.” Although cows and snakes drink the same water, the difference workings of their inherent natures produce different effects. If everything goes smoothly, it is because of the cultivation in past lives.
However, if one encounters numerous unreasonable desires in this life, it is necessary to cultivate more diligently, as this is a matter of karmic cusality.