Don't earn the first copper plate, because it's easy to become a martyr; Don't earn the last copper plate either, because it's easy to become undead.

If you want to earn the first copper plate, it means that you always want to go against the trend and copy the bottom, keep trying, and keep sinking into the sand, even if it is really the bottom, the bottom is also oscillating up and down back and forth, repeatedly polishing, it is easy to sweep your stop loss, even if you are right, it is difficult to make money.
Don't earn the last copper plate, which means not to be greedy, to make sure of money, not to pursue the maximization of interests, when there is a signal to leave, you have to evacuate, if you always want to earn the last copper plate, it will lead to paranoia, ignore the signal, want to make a lot of money, do not leave the market, and finally the market instantly converts long and short, pouring down, so that you can't choose the way, and even want to come out of it, don't let the insatiable blind, down-to-earth, recognize the reality, see the trend.
We eat fish, give up the head and tail, and only eat the body