In our everyday we are dogged by events of the past - for good or ill. Our past plays a big role in where we are today. We are here either because of or in spite of our past - or maybe even a bit of both. Awareness of the shadows surrounding us is no bad thing. We can guard against their negative influences and be grateful for their positive contribution to our present.
Just as we can't escape the shadows cast by the low sun on an autumn day, neither can we outrun the past that has shaped us. But we can move on. And as the sun sets to rise again on a brand new day, so we can leave the shadows behind and emerge into the light.