Bitcoin is now at about 6k$...
I bought tons of bitcoin when the price was at 3k$ and then sold at about 17k$, I made profits then, but now I don't think that the price can go up again...
Will it?
If you believed the BTC when it was 3K $, you should trust him now when he's at 6K $. I think soon BTC will start a significant price increase and finish at least over $ 10K at the end of the year. But in the longer term, I think its price will reach much more than December 2017.