Different markets share the same discipline problem: plan the trade, define risk, execute, review, and improve. But the details you record can change a lot.
Stocks and ETFs
Stocks and ETFs are usually straightforward: symbol, side, shares, entry price, exit price, fees, and P/L. The biggest journal fields are setup, risk, catalyst, trend, and whether the exit followed the plan.
Options
Options need more context: call or put, strike, expiration, premium, contract count, spread type, implied volatility, and max loss. P/L alone is not enough because time decay and volatility can change the trade even when the stock moves correctly.
Forex
Forex traders should record pair, session, lot size, pip risk, stop distance, news filter, account currency, and local timezone. A London-session EUR/USD trade is a different process from a late New York scalp.
Futures
Futures require contract, tick value, session, margin awareness, and whether the trade happened near a major open, close, news release, or liquidity sweep.
Crypto
Crypto is 24/7, so session discipline, leverage, funding, liquidity, and sleep schedule matter. A journal should capture whether the trade was planned or impulsive.
The shared review loop
For every asset class, review these five questions: What was the setup? Where was invalidation? What was planned risk? What actually happened? What rule changes tomorrow?