For the sake of freedom and simplicity, I do not worry about if something really exists or not. Usually, I care about if according to my personal experiences, it works for me even if it does not exist for all people (it is enough that it is real for me). If I find people with similar beliefs than mine they will see the same reality, but if the opposite occurs, they will probably never agree with me. So, my opinion about new age and about any kind of belief system is that they can believe anything they want as long they do not harm themselves and other people.

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You exist because you want to. Will is the main ingredient of Creation.