So many people lose because investing bitcoin for the short term, then invest bitcoin better for long term
I think you should not invest bitcoin in the long run, you can see that the market is down, so I think the bitcoin price will drop and it will not be able to reach $ 19800 in the year. 2018. The market in recent days is constantly changing and difficult to guess, I believe you should change your investment plan to fit the market situation.
Bitcoin is down and that is the right time to invest because eventually it will recover.
This month we have seen some good significant increase and that gives us some hope that soon we will be very bullish to reach and break the ATH.