"in 2018" is a whole year you are asking about and in long term bitcoin is going to be rising as long as nothing about it is changed and so far only the adoption of bitcoin is increasing and that suggests a rise in price in long term is not going to change.
however, it is possible to see some drop. that is the healthy reaction of any market in the whole world to go down after some rise. they are called "corrections". and it will last a short while before everything is back to normal and rising up again.
2k18 will be more interesting year for the bitcoin investor because as we see the price is rising a lot in these days and this will give a huge start to the 2k18 to progress more and the huge crowd of people is coming to invest into bitcoin in coming year and this will give more rise to the prices as well and there will be price going above the 20k+ in the end of 2k17 and will give millions of profit in the coming new year.
Many people goes to invest their fund on bitcoin and I see many people discuss about the bitcoin in the facebook videos and even some write about that too on Twitter bro. I think we will find the better price in the year 2018. We may find the more adoption and business implementation on bitcoin in this year 2018.
Please try to buy the bitcoin as soon as possible you can that will spike its value double the amount end of 2018 or even before itself.
