Jesus did not promise to change the circumstances around us. He promised great peace and pure joy to those who would learn to believe that God actually controls all things.
Worries carry responsibilities that belong to God, not to you. Worry does not enable us to escape evil; it makes us unfit to cope with it when it comes.
You know, eternal life does not start when we go to heaven. It starts the moment you reach out to Jesus. He never turns His back on anyone. And He is waiting for you.
