I will never sell under 20k$, even if Bitcoin go to 100$ ...
The peoples who bought Bitcoin at 19k$, why you are selling them now ? You bought at 19k$ sell higher than that !
If you don't beleive at this technology do not buy anymore.
It is an excellent thought, worthy of an investor, at any moment the bitcoin can rise to more than $ 20k, that is a fact, it is not known by what date. In some cases, there are people who couldn't wait and sold below $ 20k, which panic took effect, for now what's left is Hodl.