How does the author reconcile his feelings of inadequacy with his ambition to write the life story of a great Saint like Sai Baba?

In Chapter 2, the author expresses profound humility, stating he cannot even properly know his own inner self, let alone describe the mind of a Saint. However, he overcomes this feeling of being a 'lowly person' by realizing that the inspiration to write is not his own. He believes the divine form of Baba himself ignited this desire and that Saints get their own work done through their devotees. The author sees himself as merely a pretext or an instrument, concluding that Sai himself is getting his life story written, which removes any reason for fear.