Is my niche narrow enough?

I’ve struggled with finding my niche for the last year or two….it’s probably the biggest barrier in my business. I’m a nutrition coach and personal trainer. I’ve always specialized in women who want to lose weight. As I have shifted my focus solely on growing my nutrition business, I need a better niche. Here’s what I’ve come up with: I help female business professionals stop emotional eating (to lose weight). Yet, that still seems too broad?? Any thoughts or suggestions??