No. It is your mind that makes all meditations and workings successful and powerful and a ritual can't train your mind for you, you have it to do it yourself. Please do not confuse the dedication ritual for the false idea of "selling your soul". You will not lose your soul or any other part of yourself and you will not gain any power or material benefits if you choose to do the dedication ritual. It should not be done for selfish ego reasons, it is your personal initiation in Zevism and you affirm you want to follow the Truth by doing it. Not a business trade of souls and power, but a personal affirmation and dedication to the Truth.
The only personal benefit of the dedication ritual is you gain your personal Guardian Demon who can guide you and protect you from extreme enemy attacks.