Please accept my blessings. I am in due receipt of your letter dated May 29th, 1975 and have noted the contents. There are many examples in history of persons who have been very much disabled physically, but still have executed Krishna Consciousness. Still, up to date in places like Vrndavana, India, there are many persons who are blind, crippled, lame, deformed, etc., but they are determined to practice Krishna Consciousness to their best ability. So, you should also do like that. Simply be determined to practice the process of Bhakti-yoga with whatever abilities you may have. If you are really sincere, then Krishna will give you help. If you require any medical help, you can take as much as is needed.
I hope this meets you in good health.
Your ever well-wisher,
A.C. Bhaktivedanta Swami