To be more careful in daily tasks and avoid mistakes, start by focusing on one activity at a time and minimizing distractions. Practice mindfulness by paying full attention to what you're doing, whether it's writing an email, cooking, or driving. Double-check important details before finalizing tasks, and establish routines or checklists to ensure consistency. Taking a moment to pause and review your work can prevent oversights. Additionally, getting enough rest and managing stress improves concentration, making it easier to stay attentive throughout the day.