Hi! As we can see, ETH is collapsing, I got about 40 ETH which I bought for 450$, I know, that was mistake. Please give me advice, should I sell now or take a risk and do it when we reach 150$?
You only lose if you sell and I strongly believe that ethereum is going to recover in future. We are too early in predicting continuously going down and not recover. Ethereum was once selling above $1450 and if you buy at $450 is not a mistake or bad investments decision. You just need to keep holding in other to be able to sell above your purchase price.
There is no way you can accurately predicting ethereum or bitcoin price and the market move in your favor but it will always move in your favor if you can be patience and having a long term view in mind.