Relax!
in 2013 bitcoin was $1045 and in January 2015 bitcoin has seen $207!
We are seeing the same problem right now. Bitcoin has fallen 80 percent! just 3 years ago.
Bitcoin will rise again. It takes time to see another bull run.
Bitcoin might see $4000 and it is totally normal.
If you compare 2013 and 2017, the chart is almost the same.