I agree with you, the only certain thing is the price will not get stuck, it will rise or dump, but never get stuck. And yeah, I believe it will give us some surprises this 2018, just because this year is the world cup, and not sure why or how, but i'm sure that affects the bitcoin price.

But we can spect bigger surprises in other alts this year, not only in bitcoin, so i recommend to follow all altcoins markets, and if you can join with small amounts to all of them, then you will get a nice profit for sure.