Conversation so far:
What was Bhaktisiddhanta Sarasvati's religious practices?
Bhaktisiddhanta Sarasvati committed himself to the lifelong practice of meditation on the Hare Krishna mantra taught to him first by his father and then by his guru

Question: How did he live a spiritual life?
Self-contained rewrite: How did Bhaktisiddhanta Sarasvati live a spiritual life?