Very Important!
In every investment that you make, you must do it wisely. Don't just go into something with your money because of hype. Do your research prior to any financial investment and know exactly what you're getting yourself into. If you make an investment without any prior knowledge of the investment, you may as well just drive down the street and throw your money out of the window.
You can always make more money, but it still hurts to lose it. So never lose money!