We have to make a conscious effort in everything we do to make decisions favorable for Krsna’s service. If we think of Krsna, then we will become attracted to Him as will the people to whom we are preaching. If we are preaching because we want something the other person has to give, we will not really share Krsna. How will that be favorable devotional service?
Lectures from a disciple Vol 1, pg 320, Bhaktyaloka, Moscow, 1.12.97