All human souls or spirits were created before they existed on earth.
You had a choice of whether or not you would take the next step of your journey to be born as a human being, or whether you would stay where you were, but you did not have a choice as to whether or not you would exist.
You still do not have that choice.
You can choose to end the manifestation of your existence on earth, but you - your essence, spirit, soul, or whatever you want to call yourself, you would still exist. As to whether or not that existence would be to your liking, is not something that is determinable while we are in this earthly phase of our journey. Your journey, path, or life (you choose the label), will continue no matter where you are, and no matter what you believe.
You will exist forever.
If you choose to deny your Creator, then your existence may well be one of pain, sorrow, confusion, and incompleteness. You may live your life without love, joy, comfort and all the blessings that are freely bestowed on each of us by the Creator. But you will exist. There is nothing you can do about that.
Dreams of love and joy,
Dream Doe :)