People who compete in the Olympics had to work very hard to get there. People who manage their time needed to learn how to do so, and then actually do it.
Like Nike said, "Just Do It." There is no secret. Nothing you learn will make this magically happen. Just do it. There is no shortcut.
It takes some people decades to learn this. Others seem to know it subconsciously and appear to live a charmed life. The secret is that there is no secret. Just do it.