As the numbers show, the fastest way to amass seven figures is to pull down a big salary. If you're young enough, a professional degree such as an M.B.A. or a J.D. will pay off. If more school isn't in the cards, make sure to get the most out of your current profession. Keep up with market so you can negotiate for as much pay as possible and if possible. And keep up with trade publications that will help you advance in your current field.

Key stat: The average household income for millionaires is $209,000.