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.
If you don't let up on yourself and instead become comfortable always operating with some level of pain, you will evolve at a faster pace. That's just the way it is.
Every time you confront something painful, you are at a potentially important juncture in your life--you have the opportunity to choose healthy and painful truth or unhealthy but comfortable delusion. The irony is that if you choose the healthy route, the pain will soon turn into pleasure. The pain is the signal! Like switching from not exercising to exercising, developing the habit of embracing the pain and learning from it will "get you to the other side."
By "getting to the other side," I mean that you will become hooked on: