I am looking for a word, phrase, or idiom to express when a person has a lack of confidence in others based on their own personal self-confidence issues. The situation often arises where a decision is made by Manager because he doesn't feel his team can deliver the more appropirate alternative. Not because of a demonstrated inability on their [the team] behalf, but by projecting his own inabilities on others. Does such a word or snappy(ier) phrase exist?
Similar to the beautiful Schopenhauer phrase "Every man takes the limits of his own field of vision for the limits of the world."