[edited out]
searing had a lot of btc in dec 2017.
I could not convince him to sell even 1 coin. 18000 or 19000 or 18000
And he ended up selling a lot at 3900.
This time around I think he may sell some at 18.
I agree that it tends to be a bit more prudent to shave a bit off along the way up, and the amount of the shavings and the locations for the shavings will likely vary from person to person and also depending on context...
Regarding $18k? I am not sure if that would be a prudent location to make any shavings.. even though I have been ready, willing and able to shave a bit off all the way since $250 (in late 2015) to present prices.. but that is me... and my situation is different, in part because of the way that I structured my situation from the start.. which was a creation of bitcoin surplus by causing actual physical bitcoin surplus which also created a kind of psychological feeling of bitcoin surplus, too that really then allows for such ongoing shavenings without worrying about engaging in such ongoing shavenings.