I have been practicing Krishna consciousness for 14 years and in those years I have had so many doubts and questions about ISKCON, its leaders and questions on my own self. Sometimes it was bewildering, confusing and outright frustrating.
In all such situations where my faith was shaking due to my internal doubts and anxieties, I was apprehensive to approach a senior Vaishnava. Most of the times there simply was no association. Instead of hoping for the best, I resolved myself to read Prabhupada books. I spend some time reading. I found that the more I read and the more I am consistent with reading I see my doubts get cleared and my faith deeper.
As an aspiring devotee, I realized that reading Prabhupada books every day is the most powerful sadhana one can do. Because it gives direct contact with Krishna through the words of Prabhupada, it is very powerful and is like the rising sun dissipating darkness. Prabhupada words can cut through the dense forest of ignorance or maya that is within my heart and go directly to the root of my ego. There simply is no escaping it. Anyone who is honest has to accept its ramifications and embrace its philosophy. The more I embraced the more I could see the change within my heart.
A devotee who is serious about following Krishna consciousness should read Prabhupada books consistently for at least 10 or 15 mins daily in a focused and concentrated manner and not as matter of ritual.