From Kabbalah 2; class 3

In Hollywood, an astute film producer always looks for a strong character arc in any new screenplay he considers producing. The character arc is the degree of inner change a character undergoes, from the beginning of the story to the very end.

We all came to this world to achieve the greatest character arc possible—from being just an effect to becoming the actual cause. The amount of true success or chaos one generates in life is relative to the degree of character change one undergoes in life.