Regarding service for me, you should know that I expect my second initiated disciples to preach and to set a good example. By preaching, and, especially by setting a good example, you will be most effective in helping other disciples of mine either to come up to, or at least to maintain, the proper standards of behavior as a disciple. In other words, I expect my second-initiated disciples to inspire my disciples to remain fixed in Krishna consciousness. This is personal service to me, and it is the most important service you can render to me.
(Collected Letters to My Disciples, Pg 186, 2nd Paragraph)