" In expert tennis , 80 % of the points are won , while in amateur tennis , 80 % are lost . The same is true for wrestling , chess , and investing : Beginners should focus on avoiding mistakes , experts on making great moves ."
- Erik Falenstein
“ Both individual and professional investors can be overconfident about their abilities , knowledge , and future prospects . Overconfidence leads to excessive trading that can lower portfolio returns .”
- John R . Nofsinger
" The difference between successful people and everyone else , is that they ’ ve fallen in love with the process of pursuing their goals and the hardship that comes with it — the boredom , drudgery , loneliness , criticisms and failures ."