Some cash losses may be unavoidable. Instead, traders should always try to see what is presented to them as an opportunity. If you hang onto a stock that has gone up in value, you have what's known as unrealized gains. Only when you sell the stock you can lock in your gains. Since stock prices fluctuate constantly when the market is open, you never really know how much you're going to make until you sell. Think about selling if the price has risen to or beyond a target that you established when you bought the stock.
Knowing the nature of the market is the key to being able to invest huge sums of your money over time with the absolute confidence that you’re not doing anything stupid. It’s worth gaining this confidence, because investing knowledgeably in stocks has always been the single best thing to do with your money in terms of getting lifetime income with absolutely no effort on your part. A good trader will wait for the best opportunity while an amateur trader will make a trade whenever he/she perceive there is one. Understanding the stock market can never be mastered. It will require the stock market investor or day trader to put to practice what they have learned and repeat the process until they master the topic.
Good luck and safe trading!