We can freely say that serious trading on the stock exchange requires good analytical knowledge, a lot of thinking and time, so many decide to make this a permanent job for them. In a situation of large changes in value, participants in the cryptocurrency exchange analyze movements and try to predict value jumps and steep declines, because everything is in good timing with virtual currencies. Here is an example of good timing: in the famous 2017, BTC was worth a little over 800 euros in January, to exceed 16,000 euros in December! It is clear that capable people have earned a lot on the difference in value between the moment of purchase and the moment of sale! It would be a good idea to study the graphs of digital currency values before selling. Professionals try to find patterns in motion so they have various (interesting) names for the charts and their appearance: head and shoulder pattern, candle, triple spade and triple drop… You can certainly give an order to a cryptocurrency buying agent to sell you a cryptocurrency when the price reaches a certain amount, but if you want to constantly increase the real value, a better option is to buy and sell at the right time. No matter how professional you are, wrong predictions happen and are very common. It may be a good idea to approach cryptocurrency trading aware that everything can be lost in a few bad moves.