Principles are ways of successfully dealing with reality to get what you want out of life.
Ray Dalio, one of the world’s most successful investors and entrepreneurs, cites principles as his key to success.
Be audacious. There is always a best possible path. Your job is to find it and have the courage to follow it. What you think is attainable is just a function of what you know at the moment. Once you start your pursuit you will learn a lot, especially if you triangulate with others; paths you never saw before will emerge. Of course there are some impossibilities or near-impossibilities, such as playing center on a professional basketball team if you're short, or running a four-minute mile at age seventy.