I heard in the name of my Master that one must bind oneself to prayer, its mystical mediations (“kavanot”), and unifications (“yichudim”). For it is known that a person is a microcosm. And following a lower arousal, there will be an arousal far above, which will flow down until the very level that the meditator is on, and he will receive this effluence. Toldos Yaakov Yosef, p. 100a