Faith is a belief that can help someone achieve their goals, even in the face of reasonable/logical doubt. It is rooted in the uncertainty of accomplishing our intentions in the world successfully, and yet we must try given the nature of who and what we are and faith increases our chances of success. It is helpful to be confident accomplishments can occur despite uncertainty. I would be surprised if many of you haven’t heard of the placebo effect; simply believing, and having faith, in the helpful and good nature of a desired outcome that may manifest from one's actions, can affect and improve your health and healing, the outcome; and likewise, so does faith help all other conceivable preferences, goals, and desires. Acting with confidence improves your chances, in sum.