God changes us from the inside out, and we live the rest of our lives knowing we are here for a reason.
So much of life is impossible with only human effort. Start relying on God by learning why and how to fast and pray.
It is easy to try to rely on something as tangible as money for security. What are times in your life when you have faced guilt or regret, and relied on wealth or money, rather than turning to God for forgiveness?