Increasing your earned income is the best way to retire sooner. You can put money into the stock market, but being able to contribute more money to your portfolio each month will speed your path to success. However, it isn't just about making more money. You also have to invest in long-term assets that grow over time. Spending money frivolously or investing in high-risk investments that go bust can set you back on your goals. You don't have to take big risks if you regularly invest and set realistic, challe ...