There is a myth that young men and women in their twenties lack the intelligence to be interested in life-changing information. And also the myth that thirty is the new twenty and doing something later means doing it better. Instead, Meg J proved the fact that 80% of fateful events occur in a person's life before the age of 35. Two-thirds of salary growth occurs in the first ten years of a career. By the age of thirty, more than half of people are married, dating, or living with future husbands or wives. Character changes most significantly in the period from twenty to thirty years - not before and not after. By the age of thirty, the human brain completes its development. And now what to do with this information? It's time to learn how not to waste the opportunities of the "decisive decade"!