Envy is natural OP. I feel envy. Some feel it less than others, but it's really a completely normal human emotion. Don't let anyone tell you differently. But do work on empathizing with those you envy - it can help you not feel suffocated by the envy iyswim.
I am aware of certain friends envying me. Conventionally attractive, groomed, academic achiever, confident, wide circle, sporty, have a good job, bounced back weight wise from pg, DC sweet tempered, lovely partner who I adore, fb is full of trip pics, arty projects, days out, etc.
But I came from a background of extreme abuse, have suffered things physically and mentally that I can barely reveal. A lot of my "perfect" exterior is built up as a defence. My remaining family dislike me but keep up appearances because if they didn't it would reflect badly on them. Exdh is a relic of my past that I can't shake due to dc. He thinks of me what the rest of my family does - I exist to meet his needs, and all my "advantages" mean that I owe him a living.
I keep many things to myself. E.g. I don't share details of my DC time in hospital or anything around DC birth or my pg/recovery because I have gotten "oh is that all you have to deal with, must be nice" when they don't know, for example, that I had to disclose details of horrific sexual abuse to doctors before I had my DC and then create a care plan to ensure I didn't go into a psychotic state during birth, as result of reliving trauma.
I keep these shadows hidden because the more I reveal, the less people know what to do with me, they can relate to me even less than before. I become a cipher, almost a monster ("how can she carry on and be happy when she's hiding all that? there must be something wrong with her / she's lying"). Silence has made me incredibly lonely.
I am working on revealing certain things to dp - he knows the briefest outlines, no detail shaded in iyswim. But it is so hard to watch a loved one's heart break when you tell them something. So so hard. This is why silence, even with the price paid in loneliness, can feel so much easier.
My art projects on FB? they are art therapy projects. They represent things I am trying to work through in art therapy because talk therapy has become almost impossible for me to do, I have talked in circles for decades but the pain remains. People don't know that. Why would I tell them? Their pain in hearing these things only adds to my pain in feeling them.
You honestly don't know what people go through - I mean that with kindness, truly. Try to keep that in perspective and your feelings of envy might begin to ease.