It is unwise to follow a course of action that is easy and pleasant to do, but that, when done, leads to what is unwholesome, for a fool does not reflect thus, and does it, and the doing of that action leads to long-term harm and suffering. […]
I must discern that even if a course of action is difficult and unpleasant to do, but, when done, it leads to what is wholesome for me and all sentient beings, I must do it, and thus, the doing of that action leads to long-term welfare and happiness.
This is the perfection of discernment.
—Jetsun Taranatha, Essence of Ambrosia