Never think that service is perfect. That will keep you in the perfect stage. Yes. We should always think that our service is not complete. Yes. That is very nice. Just like Caitanya Mahāprabhu taught us that . . . He said that, "My dear friends, please take it from Me that I have not a pinch of faith in Kṛṣṇa. If you say that why I am crying, the answer is that just to make a show that I am great devotee.
Actually, I have not a pinch of love for Kṛṣṇa. This crying is simply My show, makeshow." "Why You are saying so?" "Now, the thing is that I am still living without seeing Kṛṣṇa. That means I have no love for Kṛṣṇa. I am still living. I should have died long ago without seeing Kṛṣṇa."
So we should think like that. That is the example. However perfect you may be in serving Kṛṣṇa, you should always know that . . . Kṛṣṇa is unlimited, so your service cannot reach Him perfectly. It will ever remain imperfect, because we are limited. But Kṛṣṇa is so kind. If you offer a little service sincerely, He accepts. That is the beauty of Kṛṣṇa. Svalpam apy asya dharmasya trāyate mahato bhayāt (BG 2.40).
And if Kṛṣṇa accepts a little service from you, then your life is glorious.
So it is not possible to love Kṛṣṇa perfectly, to render service to Kṛṣṇa, because He is unlimited.