For me, it is the practice of recollecting the Sangha.
When I feel too dry and in need of inspiration, I read Great Disciples of the Buddha, edited by Ven Bhikkhu Bodhi. It never fails to soften my heart and often brings tears to my eyes.
One of my favourite passages is drawn from the Cunda sutta together with its commentary. It tells of the Ven Sāriputta’s final days when, sensing he is near to death, and moved by immense compassion for his mum Rūpasārī, he determines to return to his natal home in Magadha. There, he gives her a Dhamma talk on the virtues of the Buddha (iti pi so bhagavā…), at the conclusion of which she attains Stream-Entry.
Shortly after, Sāriputta passes away.
Although the episode is filled with supernatural events, gods etc, there’s something incredibly profound and relatable in the Ven Ananda’s response when he hears of his dear friend’s death:
Since I heard this, my body feels like it’s drugged. I’m disorientated, and the teachings don’t spring to mind.
That intensely raw, visceral feeling Ananda describes somehow really brings the story to life for me, and inspires me to push on to the furthest shore, just as Sāriputta, Ananda and countless others have done.