I see that ethereum is drop down and before it ethereum makes his position very strong in the crypto market and in a short time makes his position in market thats why mostly people's recommend to buy and hold ethereum because ethereum soon recover his position.
Or you can simply look at the market, check other coins that have shown potential, and invest, too. Have you checked Byteball? Byteball is a better option than Ethereum because of a number of reasons. For one, Byteball is like the Ethereum of DAG except with simpler smart contracts and a friendly end user interface so can be used by both the man on the street and developers. Ethereum is only for developers.