Invest what you can afford to lose and do your research. Although it may tempting to risk it all after hearing all the success stories from other people who have been investing, really ask yourself if losing all your money is worth the slim chance of gaining much more. Chances are the slim chance of winning isn't worth losing all the money you earned. You invest what you can afford to lose and the worst-case scenario is losing that money, but you can always earn that money back. Far faster than if you invested all your money at least. The best-case scenario is you gain more money than your initial investment, then you have knowledge of your risk tolerance and you choose what you want to do next time. You slowly build your portfolio and before you know it you'll be a pro or at least more knowledgable than at first. Thanks to this, I can calmly think about my next steps and minimize my loss.