Svavasa Dasa: During a darsana with Srila Prabhupada in the Atlanta temple we asked, "How can we increase our devotion and our desire to distribute more books?" We were sitting there eagerly awaiting some special formula to expand our book distribution. Srila Prabhupada sat there and didn't even look at us. He was looking above us, and we kept waiting. Finally he said, "If you want to increase book distribution, if you really want, I have only one recommendation." We were holding our breath. He wouldn't say it immediately. Then he looked at us and said, "If you want to increase, then you must chant your rounds uninterrupted. After beginning your chanting, you do not stop until you finish." Srila Prabhupada said that this is the key for increasing book distribution, because if you win that fight, you will win all day. If you lose and let your mind carry you to another thing, it's obvious you will have a difficult day.
(The Nectar of Book Distribution, p. 322)