Answer: As long as we are in our egoism we cannot justify the Creator as the good that does good. If a person earns something egoistically and receives a certain filling, he feels good, but if he scrutinizes things correctly and sees that it is harmful, he is not able to bless the Creator and to thank Him anymore. Even when a person receives blows instead of pleasure, he cannot thank the Creator.
But if a person feels such blows as orders, as a decree to get closer to the Creator, he appreciates them in a totally different manner and reaches a state in which he thanks the Creator for them, which means that he seems to kiss the stick the Creator hits him with. It all depends on the awareness of the goal.
In other words, as long as a person identifies with his egoism, he feels the blows on himself, but the moment he ceases to feel his ego, he ceases to notice the blows he receives because he relates to his ego like to an animal by his side.
I am the human being and the animal is beside me, and it feels the blows while I don’t. We have to reach this state where I am separate from this animal, from the ego, and then the human being in me will be happy while the animal will suffer since this is what it was created for as Baal HaSulam says. A person is even happy when his animal suffers since it is actually thanks to the suffering of the ego that he ascends above it.
From the Kabbalah Lesson in Russian 1/3/16