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Floating profit and loss updates every tick. Green numbers rise, red numbers fall. A trade that's up eleven dollars, then six, then fourteen, then three, is a roller coaster in a very small box.

Each swing registers emotionally. The human brain responds to changes in reward more than to the reward itself. A drop from fourteen to six hurts more than a steady six would feel good. Those micro-emotions pile up across hundreds of trades.

The result is a bias toward closing winners at the first dip, since the loss of unrealized gains feels sharp, and holding losers, since realizing the loss makes it real. On a short timeframe, with updates every fraction of a second, the effect is amplified.

One fix is to hide the P&L column and show only price and pips relative to entry. Some traders go further and display the trade only as risk units, not currency amounts.

Another is to rely on exit rules set in advance, such as fixed targets and stops, so decisions don't happen in the middle of the flicker.

Does hiding the live P&L change how trades are managed, or does the urge just find another outlet?

Shadow Trader wrote: One fix is to hide the P&L column and show only price and pips relative to entry.

Fourteen dollars dropping to three registers as a loss even though the trade is still green. That's the mechanism behind early exits. Hiding the floating P&L column, and judging the trade on price against the planned stop and target, removes the number that drives the urge to interfere.