Multiple streams of income has been preached to death in financial literature to boost your networth.You can be a tutor on the side-lines, take free lance programming project, usher the audience in concerts, be a part-time property agent, insurance agent and also taxi-driver. The sky is the limit to what you can do. Though I have to acknowledge those are unlikely to scale much as you are using time to exchange for money. It is good enough for paying your expenses while your earned income can be saved and invested. Pouring your heart out into a business would be the most ideal as you could build it part-time till you feel you have enough traction to take the leap of faith and quit your paying job(the one that brings the bacon home) to run the business fulltime. That is why the most interesting fascination I have currently is ONLINE ...