Roots of the problem.

Funny story from college: every day in the cafeteria Len would find a hair in his lunch and rage at the unsanitary conditions in the kitchen, the carelessness of the cooks and servers, the general grossness and indignity of college life. After several weeks of this, one day we were sitting down to lunch when he picked another hair off of his plate. This time, instead of raging, he sat there staring at it with a sheepish look.

“I’m such a jerk,” he said after a while. “I just realized. It’s not them. It’s me. You guys, this whole time it’s been my hair in my lunch….” 

-- Nigel Pitman