*UPDATE - of course, as KM mentioned in the comments, we are also VERY happy for everyone's good news. It should be more encouraging than discouraging that dreams DO come true!
I think it's probably common to wish you were in a different place, no matter WHERE you are yourself. Unless you're J.K. Rowling, there's always someone ahead of you (and I'll bet even she admires someone else--you never know). For some reason, we get it into our heads that we need to rush rush rush. "But I want to be a NYT Bestseller NOW!" "I want that seven-figure deal NOW!"
But we can't let that jealousy rob us of our individual experience. Sure, we can look to the future and have hopes and goals, but we can't be so blinded by it we miss what's right in front of us. Everyone ahead of you was right where you are at one point, they just happened to go through it first. I'm learning to look at them as proof that these goals can actually be accomplished, and work my rear off to get there. Channel that desire to be where they are into making it happen, and don't give up and start whining about it all. It's WORK. Hard work. You have to love it.
As I'm waiting and waiting for my first book to make it onto a shelf next year, I've found myself wishing time would just HURRY UP ALREADY so I can realize that dream. But... why would I wish my life to speed up? I have plenty to enjoy at this stage, as well as a lot of work before I'm READY to be any farther along.