Working is always the way to make money. And the people who know saves money is the key to have big money.
Saving money (especially fiat) will not make you rich. The net value of fiat money declines every year due to inflation, and if you are saving money as such, then you will be left with close to nothing after a few years. For getting rich, you need to invest smartly. Investing in equities, bullion, BTC, mutual funds, startups.etc can be good options.