There are few ways to look at it:
1) Making a prediction based on last time the bitcoin bumped happened gained a high value then settled on one value for the whole year that came after that one then it went wild again.
2) The price will go down as bitcoin rush quiets down, until the next bitcoin rush , if you know what I mean, the hype about crypto was insane the last of 2017, so it will take some time for people to forget about it, then hit the news and headlines again.
3) My prediction for now: Price is down only as pull back from the insane bump it went into for the last 2 months, it will consolidate some more then when the lightning network hits the market or any other decent product hits the market it will make the buzz and the pump again.
4) the most undesired and unlikely but still possible : bitcoin might be starting to pop up as a bubble, which is as I said unlikely.
You choose a variant or make your own additions to a one, and always take precautions for the worst case scenario

have fun.
Currently, altcoins had dip its price value and no one knows when it will rise back to the usual market price stability but I do believe this will take a little bit long to make its increase. Be sure to hold it still and will have to consider a long term investment for this right now and just wait for the right time for its recovery. With regards to Ethereum prediction for this year, I guess this will make an improvement in the coming months where its demand as a currency is built on a blockchain with several applications
and the other is a possible investment for vehicle that keeps appreciating its value for now.