Doubt is an uneasy and dissatisfied state from which we struggle to free ourselves and pass into the state of belief while the latter is a calm and satisfactory state which we do not wish to avoid or to change to a belief in anything else.
I think that giving mindless praise is ridiculous. But I understand why parents do it. They want their kids to feel good about themselves. But parents are never going to teach their children true positive self esteem by praising everything they do.