I have been concerned about occupying a similar space myself. The great secret that we all do well to remember is that being humble is simply a matter of pract

I have been concerned about occupying a similar space myself. The great secret that we all do well to remember is that being humble is simply a matter of practicing being humble. In particular, when I treat other team members as experts in what they do, and trust that they'll value me for whatever it is that I do, I become much more efficient, and feel more relaxed too. Yes, there are still times that I notice myself acting vain, but these days a few slow, grounding breaths goes a long way toward resetting me. In fact, I wonder if the narcissism you speak of might have more to do with insecurity, deep down. In my experience, when I see myself taking a behavior that I consciously am against, the cause tends to be emotional and the solution tends to be to gently, curiously observe those situations and start questioning how I feel. When I love and take care of my emotional world, it becomes way easier to interact in a way I feel is more optimal on the fly.