Is it normal that i envy my best friends?

I'm a twenty-something girl who literally has only two best friends or even friends. The thing is and the reason why I feel so bad is because this past months I feel this anger and envy when I think of my 2 besties. let's call them A and B.... names have been change, obviously.
From the 2, I consider A to be the closest to me, we've known each other for more than 10 years, since high school. Everything was okay...she had more money than me but as kids I never noticed the difference. She went to an ivy school, her dad bought her a car... her life was good. In my case, well.. I come from a middle class family, single mother that does her best to keep us alive.. dad is sometimes in the picture. Life has been hard for me but I also had taken bad decisions. My other friend B is a bit less fortunate than A but still when her dad died he left her, which I consider, a good amount of money. she went to university, then travelled for a year thanks to a job, to the States.
The thing is my friends than A is about to arrive from a year tour from Europe when she met great people and visited great places and had experiences that she will never forget blah blah blah...and I'm still looking for a job. B is about to get a scholarship to do a master in Australia and she is going to live there for 2 years...and I'm still looking for a job.
Both of them complain because I can't feel happy for them. I really don't wanna see them, don't wanna hang out with them, don't wanna listen to them but I'm afraid that if I walk out I may regret it. After all they are the only friends I have.
I just wanna know if there is someone out there with a devilicious soul as me or if I'm only being too hard to myself.