The one thing I am now sure of is that if there is such a thing as destiny, it is a result of our passion, be that for money, power, or love. Passion, for better or worse. It can keep a soul alive even if all that survives is a shimmering. I've even seen it. I've been bathed in it. I've been changed by it.
Breathing is important in the practice of meditation because it is the faculty in us that is simultaneously voluntary and involuntary. You can feel that you are breathing, and equally you can feel that it is breathing you. So it is a sort of bridge between the voluntary world and the involuntary world — a place where they are one.