Attitude, as a personal attribute, is seen in the manner in which one behaves.  For a particular industry the reference to 'Professionalism' or behaving in a 'professional manner' will have guidance in the code of ethics, as well as the unstated understanding of those within the field.  Some questions can help one to obtain a better sense of differences in attitude.  'What does a top performer do that reflects their sense of being a professional?'  'What is the comparison of how I believe I present myself to what others perceive?'  As the philosopher says, 'There is nothing so difficult as not deceiving oneself.'