Part One: Physical Confidence [link]
Part Two: Intellectual Confidence [link]
Part Three: Spiritual Confidence
Every star sign has a certain trait to which it gains its confidence. A spiritual person cannot gain it from itself. There is something the they need to gain their energy from. This could be anything; Elements, magic, their loved ones, a God or maybe more Gods. The thoughts they gain from their own beliefs will give them the energy to do what they find is their goals. And that energy becomes Confidence.
A spiritual being is always depend, even if we don't want to be. In that form it's quite different from Physically and Mentality but that doesn't mean it is hopeless and won't be even greater than them.