Seth Godin wrote a post recently called "The Illusion of Control." As with all Seth’s posts, it prompts great thoughts.
The gist of the post is that we delude ourselves when we tell each other, tell our children, tell our employees, tell our management team that we have control over the future. We don’t. Plain and simple.
All we can control are our actions. The things we choose to do. If we choose wisely, we can greatly influence the future. But that is all. Just like with your cholesterol. What you eat will influence whether your bad cholesterol goes up or down. Not what the exact number is. And exercise, of course.