Well, first off—don't panic! You're not alone. In fact, according to the National Association of Investors Corporation (NAIC), most people who invest have experienced at least one loss. That's why it's so important not to let your emotions get the best of you when this happens—it can lead down a dangerous path where your self-confidence is eroded by these setbacks, which makes it harder to make good decisions about how much risk you want to take on next time around.
So what should you do instead? Take a deep breath! Then take some time to really evaluate whether this was truly just bad luck or if there was something else going on here that might have contributed to the loss (like maybe not researching enough before making that investment).