If Iran becomes a nuclear weapon state it is the end of non-proliferation as we know it. If Iran gets a nuclear weapon you are likely to see Saudi, Egypt and other countries follow suit and we will bequeath to the next generation a nuclear arms race in the world's most unstable region.
By the time I was four, I would walk around the corner and wait at a local streetcar stop, get on the streetcar with somebody who looked like they could be my mother and go to the end of the line.
Suddenly in the end when it's over, you feel a big weight on your shoulders. That's the role of the captain. Unfortunately, it's sometimes like that in sport.
I have heard of novels started in the middle, at the end, written in patches to be joined together later, but I have never felt the slightest desire to do this.
I believe God is managing affairs and that He doesn't need any advice from me. With God in charge, I believe everything will work out for the best in the end. So what is there to worry about.