Admit when you're wrong… and profit

In trading, it’s best to quickly admit when you’re wrong.  If you can keep your losses to a minimum, you will be able to preserve your trading capital (along with your mental capital) and improve your odds of profiting from future opportunities. As Jesse Livermore once said, “I have long since learned, as all should learn, not to make excuses when wrong. Just admit it and try to profit from it.” 
JL-QUOTE