When you think about being financially successful, what do you picture? It might be driving a flashy car, wearing the latest fashions and having plenty of money to throw around. Although this is what you might see a lot of celebrities doing, would it surprise you to know that most millionaires and billionaires are actually frugal? After all, celebrities are also often in the news for having tax problems or even filing for bankruptcy. Financial success is less about what you show the world and more about what you do quietly and sensibly with your funds. These tips can help. Know Your Needs You may not need as much money…