If you go into the realm of metaphysics about life after life after life, you're in the world of supposition. But take everything about our past actions creating a future life and substitute the word “moment” for “life”. Our action in this moment creates our life in the next moment. Bring it down from the metaphysical to the very practical, “What am I doing right now?” because this moment, my action in this moment, brings about my life in the next moment.
Whatever it is that you are facing in this moment, how you deal with it, creates how you are reborn into the next moment. So it's not metaphysical, it's very practical and down to earth. This relative self is the idea that you carry from moment to moment to moment. So your actions create your life. There's a saying that says, “You make, you get.” What you get is your life. You get to choose.
By Zen Master Bon Soeng