13+ Earl Nightingale Quotes Attitude. It seems to magically connect us to all sorts of serendipitous opportunities that were somehow absent before the change. 42 of the most powerful quotes by earl nightingale. So named as the dean of personal development. "it is in the expectations of happiness that much of happiness is found. Earl nightingale — american entertainer born on march 12, 1921, died on march 25, 1989. You can control your attitude. And it almost always involves making someone else happy." earl nightingale quotes about courage "get into a line that you will find to be a deep personal interest, something you really enjoy spending twelve to fifteen hours a day working at, and the rest of the time thinking about.". Earl nightingale quotes on attitude. "a great attitude is not the result of success;
