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.
You have your goals. I call the way you will operate to achieve your goals your machine. It consists of a design (the things that have to get done) and the people (who will do the things that need getting done). Those people include you and those who help you. For example, imagine that your goal is a military one: to take a hill from an enemy. Your design for your "machine" might include two scouts, two snipers, four infantrymen, and so on. While the right design is essential, it is only half the battle. It is equally important to put the right people in each of those positions. They need different qualities to do their jobs well--the scouts must be fast runners, the snipers must be good marksmen--so that the machine will produce the outcomes you seek.