Of course, trading is always risky, we can not always win. If we do not have broad vision, we do not have the ability to analyze and we do not have patience. We will fail in business. Therefore, before entering the business, it is necessary to prepare the knowledge and psychological preparation for the worst situations that may occur.
Yeah it is an unpredictable job on the other hand it is an interesting one. You might be in a positive profit right now but the market could go down overnight. It could also go up overnight, as well, so always watch the market whenever you can. You don't want to miss the opportunity of selling your coins in a higher price. In addition, you have no control of the market in trading unless you're a whale and you can perform a pump and dump.