To me a drop to $6500 isn't really that far... From $9k to $6k, sure its a considerable drop but would you be happy to sell now and have it go to $15k? You're going to have to work out where you'd buyback if we swing up? (potentislly around the 11k area) and what if you still have these thoughts then? Are you going to risk holding everything to have to buy back at 15k or 20k? (if we make it thst far).
Traders with experience never sell ALL, there always stay a possibility, especially with crypto, that the price will continue to drop or to raise. When the maximum or bottom will be easy to seen then they will sell or buy, depends on the target they, traders, follow.
I do not know how bitcoin will behave itself in coming days and I am not sure about any "psychological" numbers as well. I am ready for everything.