Faith is believing there is light at the end of the dark tunnel. Confidence is knowing that if there’s not, you’ll be okay. Faith is a certainty of outcome. Confidence is a certainty of ability. When combined these two forces give you powers of stabilizing your environment.
There’s a caveat though. Blind confidence is dangerous. This is arrogance. Anyone can go around making decisions. For confidence to be legitimate, it must be earned. You must study. You must know your limitations.