I sold about a quarter of my stack when it hit 64500 on Kraken a few days ago. Even in a meteoric rise, bitcoin regularly retraces 30% or so before taking back off. Happened multiple times in 2013, 2017, 2019 preceding the eventual big dump, and it happened in January 2021 though the next big dump is still over the horizon. I'll either get back all in on the next 30% retrace or sell more as it keeps going up. When I finally sell out, I'll wait for the big 80+% crash to get in. That'll happen too. Either way good times are being had.