There are two kinds of self-confidence. One is written with a capital "S." The other is written with a small "s." Self-confidence with a capital "S" refers to a person who has liberated his consciousness from the lower vehicles and, to a certain degree, has succeeded in becoming his Self and found the treasures hidden in his being. Self-confidence with a small "s" is the result of an identification with wealth, position, or certain knowledge.
Professional people are mostly found in the second category, except whose who, along with their academic knowledge, developed beingness. Wealth, position, and academic knowledge alone are slippery ground, and those who have a little insight do not feel too secure on it. But those who develop beingness stand firm in all conditions, even in all ages.
The self-confidence gained by worldly power is always defeated by the Self-confidence gained by spiritual powers. Self-confidence gained by spiritual attainment is power.