I think it wouldn't be wise to sell any bitcoins at least until the next block reward halving in 2020. After that the price can skyrocket again and I think at that point we could be talking $100k per BTC easily.
So just HODL and don't panic during short-term dips like the one we're experiencing now
Such a nice and sincere piece of advice! I have the same mindset regarding bitcoins. There is no need to give up on the most expensive digital coins until and unless they are not fully eradicated form the face of crypto kingdom and I am sure that is never going to happen. It is nonsense in simple words to give up on bitcoins. So just HODL and don't panic during short-term dips like the one we're experiencing now