“Good judgment comes from experience, and often experience comes from bad judgment.”

— Rita Mae Brown
 

 
“Change your thoughts and you change your world.”

— Norman Vincent Peale
 

 
“I never did give anybody hell. I just told the truth, and they thought it was hell.”

— Harry S Truman
 

 
“A successful individual typically sets his next goal somewhat but not too much above his last achievement. In this way he steadily raises his level of aspiration.”

— Kurt Lewin
 

 
“It is not the critic who counts, not the man who points out how the strong man stumbled, or where the doer of deeds could have done better. The credit belongs to the man who is actually in the arena; whose face is marred by the dust and sweat and blood; who strives valiantly; who errs and comes short again and again; who knows the great enthusiasms, the great devotions and spends himself in a worthy cause; who at the best, knows in the end the triumph of high achievement, and who, at worst, if he fails, at least fails while daring greatly; so that his place shall never be with those cold and timid souls who know neither victory or defeat.”

— Theodore Roosevelt