Give up the fish head, let the fish tail go, and focus on eating the fish body, that is the real principle. What you think is "from head to tail" is just an illusion of greed. Real traders understand this:

Fish are spiny and meager, a test fish is a trap with dangers lurking at the tail.
The fish only has a body because God rewards it with a golden opportunity to eat.
>"The one who eats fish heads is a gambler
> Those who dare to bite the C tail ultimately become leeks.
> Only those who focus on the fish body are hunters.