The halving effect will start from May 2019 when people start to accumulate. The price starts to rise and miners will also return increasing the difficulty as a result. Dec 2019 will certainly be a good time for bitcoin hodlers (better than it was in 2018)
Maybe, maybe not, but certainly it looks like 3000 seems to be a great psychological support a lot has been waiting for and it falls on the long term support anyway. However, it is a market, and we cannot guarantee anything yet although, knowing what the pre and post-halving usually tend to bring, I guess there is still great hope long term. Looking at the situation of things, this year would really be a very boring one, but at least, not a bad time to be accumulating for those who are smart.
So if $3000 is the support, we cannot do anything while we could only following the price. I think no matter how much the price will be, as long as we can keep making a profit, it doesn't matter for us and even I am sure that it will be a good time for the altcoin to rise back again. I see that if bitcoin is on the one point level, the altcoin can increase so high and there will be a jump of the altcoin price to break the next wall. The market will have many movements and the altcoin will alive again