Dan Rockwell wrote a post yesterday on his <a target="" title="Dan's blog" href="http://leadershipfreak.wordpress.com/">Leadership Freak blog</a> titled <a href="http://leadershipfreak.wordpress.com/2011/09/27/one-bad-apple-does-spoil-the-whole-barrel/">One Bad Apple Does Spoil the Whole Barrel</a>.&nbsp; Consider the effect of one bad apple when it comes to teams and teamwork.&nbsp; One bad apple can spoil the performance contrary to some popular sayings.&nbsp; We are influenced by more than we think, especially when it comes to attitudes.&nbsp; Dan's most powerful quote in the post: Negatives don’t produce positive outcomes; they frustrate and constrain.&nbsp; <br />