Maybe it's too presumptuous, but I'm sure 2019 will be better than 2018 because 2018 was too bad for cryptocurrency, and it seems like the worst can hardly be imagined. But the experience of 2018 showed that you should always be very careful and be ready for any mood in the market.
Yeah right, being ready to any sway of the situation will give you more advantage to pick assets that will bring good outcome, just need to believe from your own assessment, assume that reversal will happen and bring your investment a big growth.