Confidence is a reflection of one's strength, greater the strength high the confidence. A conducive atmosphere is required for the enhancement of confidence which is possible only in the presence of highly skilled and perfectionist people. If someone is surrounded with low skill or less talented people the confidence level do appear accordingly. So don't worry if there are perfectionists around you it's just to make you perfect. Just focus on developing the required qualities, like self belief, hard work, fair mindedness, understanding of entrusted responsibilities, clarity of objectives, definitenes of purpose.... This will surely take you over and retain your confidence at a higher level.