Do not be confident with the positive marks that the market is showing at this moment. There is a higher tendency that it will agaim be on red in a sudden. The same with the majority of cryptos, the price of ethereum would more likely to recover next year. So the best thing to do right now is to avoid making unnecessary actions and focus into holding and waiting.
That's what I did from the beginning of last October, I collected a lot of coins and sometimes bought some Ethereum in the hope of going up at the end of November. But in fact Bitcoin and Ethereum fell back. Hodl is the last choice I have, because selling at the current price is the same as suicide.
Use the current opportunities to invest in Bitcoin or altcoin that are popular because we will rise at the beginning of 2019. That is the hope of many people I have heard.