['My boss tasked my coworkers and I each with an individual project and whoever did the best would get a promotion. My coworker blew us all out of the water with her project. I only wish I had her skill...']
Wow. I'd just use that as motivated to get better. I'm sure you can get to her level or exceed it with some deligence.
My coworkers and I were each tasked with individual projects and whoever performed the best would get a promotion. My coworker killed it and got the promotion. I really wish I was as good as her.