Envy is one of those things I've always struggled with. I've said it in confession more times than I care to count. That's why this article from Young and Catholic really caught my eye: How to Be Happy For Other People in 4 Easy Steps.
In the reactions she describes, I definitely fall into the second category. I never think badly about the other people or wish them unhappiness. Instead, I feel bad about me. My sense of self has never been that strong, coupled with a healthy dose of depression, and I soon go careening into a very deep pit. It isn't pretty. It is something I will most likely struggle with until the day I die. On the plus side, I'm better than I used to be, so there is always hope!
The author of Be Happy for People in 4 Easy Steps offers some very concrete ways to help the process. It is definitely worth reading if this is a problem that you struggle with.