Tamāla Kṛṣṇa: Prabhupāda, when I'm serving you sometimes I feel very nice, but then when I think of how bad and imperfect this service is, I feel terrible. Which is right to feel?
Prabhupāda: (chuckles) You feel terrible?
Tamāla Kṛṣṇa: Yes.
Prabhupāda: Why? When you feel terrible?
Tamāla Kṛṣṇa: When I see all the blunders I make, all the mistakes.
Prabhupāda: Sometimes... This is nice. To accept the blunders... Even there is no blunder. This is the symptom of sincere service. Just like a father is very beloved to his son or the son is very beloved to the father. A little ailments of the son, the father is thinking, "Oh, my son my die. I may be separated." It is the sign of intense love. Not always that the son is dying immediately, you see, but he's thinking like that. Separation. You see? So that is a good sign. We should not think that we are doing very nicely. We should always think that "I am unable." This is not bad. We should never think that "I am perfect." Because the māyā is so strong, as soon as you are a little confident, immediately there is attack. You see? In a diseased condition... Just like one who takes very precautionary method, there is little chance of relapse. So this is not bad. We should always think like that, that "Maybe I am not doing nicely." But as far as it is in our power, let us execute our business nicely, but we should never think that it is very perfect. That is nice.
Bhagavad-gītā 7.1 -- Los Angeles, December 2, 1968