Have you heard the words, "the truth will set you free"? Jesus spoke these words and he also said, "I am the way the truth and the life". So if you are truly hungry for freedom and your heart is open to Jesus, great, but no, you don't need to be a Christian or become one, we just want you to be free and this works because God's love is for everyone!
It's likely that the more Liebusts you have, the more freedom you will receive. If you feel you need more, you can book more OR you can train to become a Liebuster where you will receive Liebusts as part of your training. You will then be able to Liebust yourself and others too if you wish.