The price of cryptocurrencies basically follows the rules of demand and supply. As the coin becomes scares it becomes more valuable and hence the price increases. One common mistake most investors do is that, once they see the price of a coin is going down, they hastily dump what they also holding which increases the supply more than the demand and further reduces the value of that particular coin. Later we try to put the blame on the team that they are not managing the project well. Let's help sustain our coins by avoiding panic selling. Its a collaborative effort.
When I invest, I mostly prefer long-term investments, so even if I can not predict the price clearly, I have a chance to determine a certain target price levels for myself. Sometimes I can clear these options without waiting for the target price I set when I get a good profit margin from time to time. Obviously it is difficult to make price estimates but at some times I say I have not sold well, and sometimes I am regretting that I have not sold it. It is easy to determine a price level within this market but it is very difficult to achieve that level or catch those levels. For that reason we must set ourselves certain values as targets and when we reach those goals we should not set the higher points as targets. Whenever we think bigger, we will overcome our goal and start to lose.