Look into Buddhism.
They know a lot about changing bringing out your Inner Self, the Divine within you.
It doesn't matter how many external things you change about your life. All the fresh air and green tea in the world won't make your life better unless you change from within.
“As I am sure any cat owner will be able to tell you,
someone else putting you in a box is entirely different
from getting into a box yourself.” —bisexualbaker