Improving trading accuracy will lead to fewer losing trades, an improved profit/loss ratio, better consistency (more green days), increased confidence, which in turn encourages bigger share sizes and greater overall profitability, creating a positive feedback loop.
"if right now you're struggling with poor accuracy, your calendar is red, the first thing to focus on is improving accuracy. Because when you improve accuracy, what happens? Your accuracy goes up. Invariably, you have what? Fewer losers...your profit loss ratio is typically going to improve...What gets better? Your calendar, your consistency...now you start getting better consistency and that makes you feel confident taking more trades and taking bigger share size. And you do all that and you're making more money. And so this becomes a positive feedback loop."