How do you know when a losing streak is just variance and not a sign something is wrong?

"I compare the losing streak to my historical data. If the losses are happening within my normal expectancy, following my rules, and under market conditions my strategy has seen before, it's usually just variance. If I'm seeing unusual behavior—larger drawdowns, rule-breaking, or performance that's statistically outside my normal range—then I start investigating. The key is trusting data, not emotions."