Just as a plant grows once placed in the ground peace will grow once Christ is accepted as our Savior. As we grow into His likeness we experience growing pains through disappointments but He shows Himself worthy in all things. He has ways of dealing with things that are different from automatic responses we give.
Christ deals with our hearts. Once we accept Christ as our Savior His work begins in our hearts. There is no need for despair along the way because nobody stops growing. We all have a long way to go. We are all a beautiful work in progress.
Colossians 3:15 New Living Translation
And let the peace that comes from Christ rule in your hearts. For as members of one body you are called to live in peace. And always be thankful.