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.
To give you an idea of what I mean by tough love, think of Vince Lombardi, who for me personified it. From when I was ten years old until I was eighteen, Lombardi was head coach of the Green Bay Packers. With limited resources, he led his team to five NFL championships. He won two NFL Coach of the Year awards and many still call him the best coach of all time. Lombardi loved his players and he pushed them to be great. I admired, and still admire, how uncompromising his standards were. His players, their fans, and he himself all benefited from his approach. I wish Lombardi had written out his principles for me to read.