You should not be completely sure of any investments, including cryptocurrency. It is better to always have a backup option how to get your money back and stay in the black. Recently, I have ceased to participate in the ICO, since it is easier for me to trade on the exchange
There was never a time anyone was meant to trust cryptocurrency. It is highly volatile and you know that anything is likely to happen at any time, so why then should you trust it? Youre taking risks, yes its an investment, which youre not sure of where exactly the price is heading to. You just got to invest your money and the money youre investing should be something youre ready to risk as well. If you make profit, then youre lucky, if not, then you try to console yourself 
.Practically we all do face reality still nobody knows whether there is really going to be any increase in the price of crypto or not. You should check all these analysis you would see that they are not always correct most of the times they are being said. For once I have not even seen one that accurate. So, the price of crypto is just unpredictable, if youre lucky to buy at the right time before it goes up, then youre just lucky lol. Most of them that complains this time are those that bought out of FOMO and have lost their money in it.