Both Lucifer and Caligastia were patiently instructed and lovingly warned respecting their critical tendencies and the subtle development of their pride of self and its associated exaggeration of the feeling of self-importance. But all of these attempts to help were misconstrued as unwarranted criticism and as unjustified interference with personal liberties.  Conscience is really the criticism of oneself by one’s own value-habits, personal ideals.  It requires no great depth of intellect to pick flaws, ask questions, or raise objections.  Jesus said: Let us give authorities no occasion for offense at our attitude. 
If you truly desire to overcome the habit of criticizing some friend, the quickest and surest way of achieving such a change of attitude is to establish the habit of praying for that person every day of your life.  Religion does not grow unless it is disciplined by constructive criticism.  True and genuine inward certainty does not in the least fear outward analysis, nor does truth resent honest criticism.