Your are among the type of people that do buy when one supposed to sell and take profit from your investment. Good to know that you have learned your lesson and now buying at the right time. Now is the buying time whoever want to invest now before is too late again.
Usually, I refrain from giving investment advice to others because neither I am an expert nor I want to be responsible for others' loss. This time though, I feel like suggesting others to buy because soon we might be on the rocket to the 100k cloud once a decent bull run starts. I still don't know why the price fell down by so much because we may blame someone for it, but a single guy although a billionaire shouldn't be solely responsible for the crash.
If you don't want to buy right now guys, at least don't sell at such prices because it's almost certain that we will hit better prices if not a new ATH altogether really soon. That said, it's your money so take your own decisions and I am just sharing my thoughts.
It's not easy to keep yourself up and optimistic when you have lost half your portfolio value but this is what we are all discussing in this thread, how to avoid the emotional outburst and gather ourselves.