It seems a contradiction in terms to speak of Christians as paranoid, for Christians are expected to be like Christ, and He certainly was not tinged with paranoia. But the Bible says some who name the name of Christ are not yet conformed to His likeness.
Self loves to indulge in delusions of grandeur.
We like to think we can do a job better than others can. We are trapped by pride. We become great in our own estimation, and if we do not receive the recognition we think we deserve we are deeply hurt. The flesh sometimes resorts to delusions of persecution. Unconsciously we feel the need of drawing attention to ourselves, so we accuse others of mistreating us.