How you look, talk, write, act and work determines whether you are a professional or an amateur. Society does not emphasize the importance of professionalism, so people tend to believe that amateur work is normal. Many businesses accept less-than-good results.
Schools graduate students who cannot read. You can miss 15% of the driving-test answers and still get a driver license. "Just getting by" is an attitude many people accept. But it is the attitude of amateurs.
"Don't ever do anything as though you were an amateur.
"Anything you do, do it as a Professional to Professional standards.
"If you have the idea about anything you do that you just dabble in it, you will wind up with a dabble life. There'll be no satisfaction in it because there will be no real production you can be proud of.
"Develop the frame of mind that whatever you do, you are doing it as a professional and move up to professional standards in it.
"Never let it be said of you that you lived an amateur life.
"Professionals see situations and they handle what they see. They are not amateur dabblers.
"So learn this as a first lesson about life. The only successful beings in any field, including living itself, are those who have a professional viewpoint and make themselves and ARE professionals" — L. Ron Hubbard