"Send all tries" - there is such a book) and the method itself is also very effective)) again these one hundred and forty characters are needed for answers, but I answered shortly)
Why rejoice? - when something does not work out for you, then you have found the border of your capabilities. And your development (learning) began. How can you not be happy? Seriously though, in this way you can rewrite the "imprint" of a negative reaction to something that does not work.
Take risks with a known error cost. Especially if success means an arbitrarily large gain, and not some limited and known in advance. Examples: buying a lottery ticket; holding a meeting with a potential client; an attempt to enter a university.
Do not take risks where the price is unknown in advance or is too high for you. Examples: buying lottery tickets with all the money; jump over the pit; slapping on the buttocks of unfamiliar women.