Most people suffer from lack of confidence and self-esteem, fearing to express oneself publicly even when they could have been the best choices at job interviews.
Employers have their eyes on those individuals who can play the game of perfection, have a wizardry that wins minds and magic that keeps coming back.
Communication is a quality that makes up credibility. Bosses can hire or promote someone simply because they can chat confidently at a business meeting.
Building self-esteem and elevating communication skills help to boldly express and share ideas. The command of the English language is to no avail when there is no art in public speech.