I oftentimes give the example that the disciple must depend upon obtaing spiritual strength from a source beyond himself/herself. The spiritual master, who represents Lord Balarama, is carrying this strength on behalf of the disciplic succession. If we take shelter of his instructions and chant sincerely, we will receive the required strength to withstand the test of living in the material world. Ultimately, that same strength will transform into the ability to establish our relationship with Krishna, the ultimate solution to all the problems of material life.
Collected Letters Written to Friends and Disciples Vol 4, Pg 18, last Paragraph