The past is innocent. It doesn't know what's coming. It is naive and fanciful. It has expectations of the future that are way wrong and completely off base. The past thinks it will live on forever, but looking back, we see that it cannot, and does not. People die. Marriages dissolve. Accidents happen. Lotteries are won. What was high and hopeful becomes low, and the low becomes high. Everything shifts in unexpected ways. Everything changes.
And all we ever have, not being able to foretell the future, is our innocence as we stand today. We are pure and perfect in the present moment and that's the only thing that's really real.
I have no idea about all the things that will happen in my future so I stay in the moment and enjoy what I am experiencing now.