I think it is all too natural for us to try and change our destiny. As if worrying and contemplating the next move 4 moves will change the game if we pick the right ones. What I have discovered is that I missed out on a lot of little things that were much more important than the current worry. I was not enjoying the moment or appreciating where I was.
It took me 33 years to realize that my father was trying to get me to slow down and understand that worrying is not going to help but only hinder. I can make sure to decide things in a positive way and handle situations in a logical manner and with that I can be comforted knowing that the outcome will be ...what it will be.
If you cannot change it, if you cannot see what fate has in store for you ... DON'T WORRY ABOUT IT :-) Be present where ever you are and you will be surprised how things will go your way.