Jealousy – Sister-in-law

I am jealous of my sister-in-law, who according to my mother is always doing so well. My sister-in-law lives in the same property as my mother. Each time I call my mom, she explains how wonderful and amazing life has been for my sister-in-law. How she does so well and how she met great friends. It’s like everything she is touches, turns to gold. When I hang up, it makes me feel she gets it and I do not, which creates for me a feeling of jealousy and frustration. I am telling myself, great for her, but it sticks to my mind.