Wealthy people focus on one thing, and that's investing in assets, not liabilities. Becoming rich and wealthy is one thing, but staying that way is another thing. And that is why in order for you to maintain your wealth, you must have a good net worth. You must have good assets! This is another principle the wealthy use. A poor person on the other hand, may acquire a great amount of money today, possibly even become millionaires, but if that money isn't invested well it won't multiply. Hence going back to being poor sooner or later.