Credibility

Promise yourself to be so strong that nothing can disturb your peace of mind.          

To talk health, happiness and prosperity to every person you meet.          

To make all your friends feel that there is something in them.             

To look at the sunny side of everything and make your optimism come true.                                

To think only of the best, to work only for the best and expect only the best.                                   

To be enthusiastic about the success of others as you are about your own.    

To forget the mistakes of the past and press on to greater achievements of the future.                   

To wear a cheerful countenance at all times and give every living creature you meet a smile. 

To give so much time to the improvement of yourself that you have no time to criticize others.              

To be too large for worry, too noble for anger, too strong for fear and too happy to permit the presence of trouble.                                

Christian D Larson
"Your Forces and How to Use Them" 1912 

I have found a little book by a prominent author with inspiring quotes.  It is a motivating collection of famous sayings. Alas, this quote was already the second one in the book attributed incorrectly. The thought the words are by an "Anonymous." 

Once again, it reminded me that I have to use our own inquisitive mind, rather than just blindly following someone prominent and admire someone famous. Thanks to the Internet search and more thorough researchers,  it appears that these are the words written by Christian D. Larson.

The other quote had a very similar wording as the poem frequently being attributed to Ralph Waldo Emerson.

I think that thoroughness and truthfulness lead to credibility. Fame and prominence have nothing to do with it.