End all debt
This is without a doubt the very first thing you need to do if you want to become a billionaire. While some amount of debt is unavoidable (a home mortgage being a good example) and might be necessary to boost your credit score, you should avoid high-interest debt like the plague.
You cannot build wealth if you spend a large chunk of your monthly paycheck to pay the minimum on four different credit cards. The interest rate charged by your credit card provider can be as high as 21%, even higher in some cases.
So, get rid of your high-interest debt as quickly as you can. Once you do, make sure you pay your credit card balance in full, on time, every single month.
