On what basis? You're assuming that this feeling is wrong. It is not. There is no need for correction.

Therapy isn't so much telling you that your feelings are wrong. Feelings arise from many factors that are beyond your immediate control.

Therapy helps provide better context for, introspection into, and understanding of those feelings, and more importantly, alternative ways of responding to, expressing and acting upon them.

At the very least, expressing them less aggressively while still getting across your point.

Not trying to invalidate your feelings, but stewing in resentment is like drinking poison daily. Therapy can help you acquire the psychological tools and habits needed to help you and those around you live happier lives

Just like you're assuming the OPs feelings are wrong. They are not.

I remember my dad lamenting the bourgeoisie to a family friend who recently immigrated to the US. His answer was, "To us, you are the bourgeoisie"

There's always someone richer than you, you can hate it, but what's the point? You just make yourself miserable and don't enjoy whatever you can carve out of life for yourself