According to the 9 Aspiration Formula

The north sector is known as the career sector. If you want to activate your career add water features such as fish tanks or fountains to this sector. Since dragon(link) are also a symbol of water place one in the north facing the north at running water. One can also keep metal turtles(link) in a bowl full of water near the main door in north. Keep the bowl in the left hand side of the main door(left from inside)

Next Apply the 8 Mansions Formula

What a career really is referring to in Feng Shui is your life's purpose. It's more than just a job. Here you should face your Life or Fu Wei direction for personal development. Click here to see your personal lucky direction according to 8 Mansions formula(link)

Flying Star

Ideally you want to find rooms with the number 1, 6, or 8 and activate any number 8 with water features.

Black Hat Theory

If you look at your house directly the front door is the mouth to your career. This is with the assumption the front door is directly in the center of home's layout. Keeping this area full of flowers and good chi will help prospects of the home land great opportunities.