All other questions are in avoidance of this one, however this cannot be seen until one fully investigates the question. This is not a question that you ask and demand an answer. This is a question you will be well served spending the rest of your life investigating. If you are looking out into the world for the answer, you will be mislead until the day the body you are currently in dies. If you follow the question into yourSelf, it will begin to blossom, as it takes away the answers the mind/thought comes up with in response to it. Follow this question until it no longer has an answer when you ask it.
There is no greater gift than what this simple question leads to.