Discovering Your Potential
Screenwriting from the Heart, by James Ryan, has a different perspective on what it means to change your life. You don't have to be interested in writing scripts for movies to benefit from the fundamental idea of Ryan's book. Good stories are about discovering life-changing potential.
Life change doesn't mean that you trade in your old self for a new kind of person. Rather, it means that you discover that you have more potential than you realized you have.
Consider these Google definitions of potential:
Having or showing the capacity to become or develop into something in the future.
Latent qualities or abilities that may be developed and lead to future success or usefulness.
Consider also this Google definition of latent:
(of a quality or state) existing but not yet developed or manifest; hidden; concealed.
synonyms: dormant, untapped, unused, undiscovered, hidden, concealed, underlying, invisible, unseen, undeveloped, unrealized, unfulfilled, potential
All of these words are different ways to say the same thing: you already have the potential, the capacity, the ability. Pick whatever synonym you choose to change your life for the better.
How Characters Develop
Character is one more Google definition for you to consider:
the mental and moral qualities distinctive to an individual.
"running away was not in keeping with her character"
synonyms: personality, nature, disposition, temperament, temper, mentality, makeup;
a person in a novel, play, or movie.
synonyms: persona, role, part; dramatis personae
"the characters develop throughout the play"