I work at a large corporation in a team of 10 people. Seven of the people are one level above me in terms of seniority and only 2 of them have directs. I asked my manager to lead a project about 6 months ago and the project has been going very well. The scope and potential has increased considerably to the point where we are going to hire.
My manager asked if I would like to manage the new hires as they will be dedicated to my project to which I said yes. I've now heard that some of the other members of my team, some of whom are 10 years older than me, are unhappy that they aren't being given similar opportunities or directs.
As far as I'm concerned, I asked to lead this project and it's because of me that it's been successful thus far and senior managers are taking notice and want to invest in it. I think my coworkers' careers are on them and they should be creating their own opportunities instead of complaining about mine, but equally I'm concerned that I'm going to start facing headwinds if my team becomes resentful as they own projects that my project depends on and we have to work together at times.
What's the best way to handle this?