I have to be careful with Ethereum if its price suddenly goes up because Ethereum is a purely decentralized coin that can go up and down quickly at any time. With this view, I am sure I can anticipate to reduce losses in Ethereum trading.
Everything requires knowledge and I choose the third option from the poll that OP wrote, because I believe in myself more than I have to be carried away by market currents. Although Ethereum is in great demand by all investors, Ethereum still has a fluctuating price character. Currently, Ethereum has passed 3,200 dollars, maybe tomorrow the price could drop to 3,000 dollars or maybe more than 3,300 dollars.