Protection?

This is the view looking out the gate where I work. The large tree in the pics isn't usually lying on top of that truck, and it's not usually snuggled around that van. I and another person had just come back from lunch and gone back to work when Mike came by and asked if I had seen the fallen tree. It was like having the elephant in the room suddenly come into view. We cut the van out, but the truck was holding the tree up so we left it for folks with better equipment. The tree kept trying to roll in the gusty winds while we were cutting the van out, and I was reminded of something I'd read.
It seems many christians believe that we are all here for a purpose and that we will not be harmed until we achieve that task. By the standards of my life this wasn't a close call, not even on the same book. I nearly pissed myself when stuck on a cliff once because moving meant falling some seventy feet into a rocky river. I wonder though if I've a task; what is it? Did I do it already? Will I? If I don't, will someone else do it?