How to Support Sales Reps Stuck in Negative Mindsets Without Hurting Confidence or Relationships

For the past 6 months I’ve been in a new manager role focused primarily on coaching, and it’s been incredibly rewarding. There’s nothing better than seeing a rep implement something you coached them on and then watching their sales (and income) take off. One area I still find challenging though is pushing back on limiting beliefs — especially when negativity starts creeping in. How do you approach a rep who is stuck in a negative mindset without damaging the relationship or their confidence?