This is the best time to be strategic, research about viable project and invest in the dump/bearish market, soon there will be an increase in the market space and the investment will pay off, do not invest base on sentiment or social media hype, invest best on your understand about the project and result generated over time.
I do what I always do, cash out what I need and keep the rest. I have cashed out on December when the price was $20k, I also cashed out when the price was $6k, I cashed out last year when it was like $2k as well. I always earn my living from bitcoin and when I earn some bitcoins I just cash them out to pay my expenses and when I cash out I leave like couple hundred dollars just in case if I do not need it. I don't care about the price of bitcoin, I do not care about how much bitcoins I have.
I cash out my needs and leave the rest, when its $20k it was easy to cash out small amount of btc and leave it rest, now not so easy but I still do the same.