I think it's not so much ignorance, many incorrect assessment.Knowledge itself is actually a few can boast.It's complicated.But the success, talent may be.But despite the high position and talents zaznattsch person may or may not.Considering them for nothing.
Low samootsenka- sometimes reverse side high, when a person requests the huge, but it does not find them meet or reinforcements in their capacities for opinion of himself.Then he needs does not diminish, but suffers from insecurity.Most thinking is just wait and podfortit.
Self-esteem comes from childhood, when one parent is said to be the best, and all will win and the other, that it is nothing, and compared with the neighbor jerk.
While yes, if a man zaznaty talents and attributes themselves, who do not have it themselves from ignorance.
So de as an extreme uncertainty.In general, these are two sides of the same coin.