Actually, the best thing to do to be able to build your financial credibility is to live simply.

By living simply, means you get to pay your bills on time , buy what you only need and be able to save some for your future or a big want like a car.

Indeed, paying ahead of the deadline would create an image to the credit company that you are a good payor. Even without asking for an additional credit limit, they will keep calling you to avail of their low interest loan.

Why should you take the loan on the first place, when you have no need for it.

So, better yet, never entertain them, lest your debt will increase if you take them being enticed by the little interest.