Some people love your light until it exposes something they wanted hidden.

Some people genuinely appreciate your growth, and some appreciated you mainly as a comparison that made them feel comfortable. When you become clearer, more capable, or less willing to accept things, you can inadvertently make visible something they were managing not to look at. Their reaction is usually about that, not about you. It still lands on you, which is why it hurts.

Notice who becomes cooler as you improve. Do not shrink to restore the old balance, and try not to be too harsh about their reaction either. Keep growing and let the relationships adjust honestly rather than by your dimming.