Seder Hallel: Rav Kook: Paragraph Eight
“From the straits did I call upon God; God answered me with expansiveness.” There are many things that can inhibit a prayer, however one who imagines that he has mastered any possible limitations, can grasp with a mighty hand onto the very idea of prayer, and call out to God at every moment, and all possible limitations will automatically disappear.
At that point the light of prayer that is expressed by this person is able to rise with great strength and power to the Highest Worlds, and clear out paths of prayer for all who are praying, even those who feel limited. It is specifically of such a person that we recite this verse,“From the straits did I call upon God; God answered me with expansiveness.” (Orot HaTeshuvah, 15:8)