Your go to way to earn money?

I am still in generation one but I have noticed that whenever you get a little richer or you had more objects to the house - the bills always go soooo high than before! I have always wondered if my sims will ever get to millionaire rich but it is nice touch to have expensive bills just to quickly kill your sim's wealthy status and move into a smaller home.

Usually my method of money is the basic careers like business and secret agent at the minute, married a not so wealthy sim which I like a challenge to see if I can get wealthy in that sort of way!