The 3 thoughts I like to play with when thinking about investments are
1) don't try to time the market
2) be greedy when others are fearful
3) don't measure your portfolio based on the high water mark
I didn't sell everything at the top, though I suspected a drop was coming, I just hodl (not just crypto, stocks too). I have confidence that the companies I stock in and the crypto I keep are in companies/projects that I want to see succeed, not just those that I think will provide the best return, though those two things often overlap.
However, now is the time to be greedy, and I'm sure that time will continue for the next 12-18 months. Is this the bottom? Probably not, but it may be bottom enough.
The last point is what I find interesting where everyone says they "lost 20%, 40%, etc etc" but I've never understood why they take the high water mark and not what the market "should" have been priced at.
We are confident 2020/2021 were significant bubbles driven by monetary policy. So why would we consider the top of the bubble to be what our portfolios should have been valued at?
I prefer to look at the price from 2019, and look at the return on investment from there, or earlier if you like. Compare where your portfolio is to had you been in cash or other investments. To me, this is the way to take the long view. Yes, you could have sold at the top, you didn't, so you never had that value.
I find this mentality helps me keep an eye on the longer-term. YMMV