The question is will history repeat?
Each year that the price of BTC has fallen has been followed by an up trend.
When compared to 2014, the drop in 2018 doesn't look quite as bad.
Given the current price if a lot higher than back then the possible gains in 2019 look interesting.
Ignoring the spike in early 2018, and looking at the growth since EOY 16, has been about 3-4x.
The bigger influence in 2019 has to be the awareness globally of BTC.
Far more people know about it and/or are using it.
Add in the volatility in stock markets, and the prospects for 2019 are looking good.
https://cryptopotato.com/2018-marks-the-lowest-average-daily-value-change-for-bitcoin-in-9-years/