Is a Trading Journal Worth It?
Yes.
A trading journal is the only tool that turns trading experience into measurable improvement. Without one, you repeat the same mistakes under different tickers and convince yourself each one was unique.
Traders who track, review, and adjust based on data consistently outperform the ones running on instinct. Memory distorts results. Your last green day feels bigger than it was. Your last red day feels smaller. The journal records what actually happened.