There are no mistakes, only lessons. Growth is a process of trial and error - experimentation. The failed experiments are as much part of the process as the experiment that ends up working.
A lesson is repeated until learned. When you have learned it you can then go on to the next lesson.
Learning lessons does not end. There is no part of life that does not contain lessons. If you are alive, there are lessons to be learned.
Consciously or not, there are existing lineages of families who have been using a specific success formula.