When we finished a personality assessment at work, I asked my friend Dan if he would share the results with his wife.

"That would require me to go home and say, ‘Hi, honey. I just paid someone $400 to tell me what’s wrong with me,’" he said.

"What's wrong with that?" I asked.

"Well, based on that, and considering we’ve been married 23 years, she’d probably hand me a bill for $798,000."