How can individuals effectively discern between constructive criticism that will benefit their personal growth and negative feedback that may harm their self-worth and confidence?

Tone
Individuals can discern between constructive criticism and negative feedback by first considering the source of the feedback. Constructive criticism usually comes from someone who has their best interests at heart and provides specific, actionable suggestions for improvement. Negative feedback, on the other hand, often lacks specificity and may come from someone with ulterior motives or a history of being overly critical. It is also important to consider the tone and delivery of the feedback - constructive criticism is usually delivered in a respectful and supportive manner, while negative feedback may be harsh or hurtful. Finally, individuals should trust their own instincts and feelings - if the feedback makes them feel motivated and inspired to grow, it is likely constructive; if it makes them feel discouraged and insecure, it is likely negative.