In this endeavor (of serving as a counselor), you will constantly find new challenges when trying to deal with the individual needs of each devotee under your care. I pray that all of you will remain pure in your dealings, by strictly following the principles of Krishna consciousness yourselves, and that you will always be careful not to introduce any concocted formulas for becoming Krishna conscious. If ever any question arises in your service about something, which you are unsure of, please include your questions in your reports and I will answer them according to your needs.
(Collected Letters to My Disciples, Pg 158, 2nd Paragraph)