There have been many traders who can attest to the benefits that a trading journal has.
Do you keep a journal of your trades too, and has doing it helped you?
For someone who is not good at keeping records or journals, they will have struggles with trying to keep up journals of their trade if they take up trading. Keeping a journal can help a trader learn from their mistake, but if as an individual, you are good at learning from your mistake, and you always try to learn from your mistake when you loose from trading, a journal may not be necessary.