i don't know how much u make how much u have saved what ur risk management is but i can tell you that if you hold and btc goes down to 7k it will definitely make a bounce back from there to 11k-12k again...meaning you will have another opportunity to sell at this price surely. If you hold and price goes back to normal and then some, you make money. before 2k19, do you really think btc won't hit 15k again?