A seasoned veteran investor once said "The best entry points FEEL the worst to take."
I always feel bad when I am buying as the price goes down because you don't want to miss the "bottom" and you also don't want to miss buying the dip in case it shoots back up :-D Catch 22 situation.
I figure it’s best to buy at 11k before it jumps to a billion once everybody realizes that bitcoin starts with a “b” and the price correctly goes to a “b” illion 😉