Habit is a dangerous force.

Some tasks are so routine that we shut off our brains and run on autopilot.

“Been there, done that,” we presume. “Let’s plow through the work and move onto something more stimulating.”

We don’t realize even the most mundane activity offers the chance to turn “ho hum” into a life-changing opportunity.

Case in point: business emails.

Every email below will, at first blush, make you want to run through the motions. So boring. So tedious. How soon can it be over?

But look at the simple twist to each message, and you’ll see how a fresh perspective can propel your career in unexpected ways.

Read all nine examples at CNBC.com where the column is featured.

Featured photo: Chris W. (Flickr)