Hi Alana,
It maybe that you've just been busier or preoccupied this week. Envy is one of the 7 deadly sins, and they say "Idle hands are the devil's workshop".
The important thing is that you've recognized that you suffer from this to some extent. Envy is a natural human emotion, just don't let it get the best of you. It can be very destructive.
Keeping yourself busy, recognizing what you have, and making changes in your life, all will help you deal with envy. There are lots of good resource for dealing the Green Eyed Monster on the web. Even if you don't think you're really suffering from envy, it can't hurt to have a little better understanding of that emotion.
I think it ebb's a little with age too. At least that's been my experience.
Warm Regards,
Paulie.