Who is the writer of three mistakes your life?

There is no book titled "Three Mistakes Your Life." It's possible you're misremembering the title or author. Could you please provide more information about the book?

For example, you could tell me:

* What is the genre of the book? (e.g., self-help, fiction, memoir)

* Do you remember any details about the plot or characters?

* Do you remember any other words or phrases from the title?

With more information, I might be able to help you find the book you're looking for.