You can fall asleep praying to your Divine Mother to help you awaken within the internal worlds. You can pray to Morpheus to take you out of your body and to illuminate you within the world of dreams. It is not necessary to have a formula; what you need is sincerity, concentration and faith. The words of the heart are the most potent, impactful and lasting. Oftentimes aspirants pray mechanically. I like to remind students of these lines from Shakepseare:
My words fly up, my thoughts remain below.
Words without thoughts never to heaven go.
-Hamlet, Act. III.iii