Yes I do and unlike @speedo, I can even tell you but I am gonna have to kill you afterwards so it remains a secret.
These rules can be most easily applied if you keep the following in mind: "losses don't count if you don't realize them".
That would be Buffett of course. He never loses money ..... because he's in the money printing business. AKA License to Steal, AKA Insurance Biz. So the "secret" is buy an Insurance company ... if you can find one for sale.
Thread title reminded me of this book i read back in 2000. There were no secrets given away in the book either.
The secret is all in the chart actually. The ability to distinguish between 1. organised, nice looking, clear chart 2. disorganised, messy, jerky, spiky, erratic, violent chart is very important. For the first chart, very easy to earn money. So better trade as much as you can. For the 2nd chart, very easy to loose money. So better don't trade at all.