Why niche

I am trying to wrap my mind around why it is so important to have a niche. Brooke obviously has in the past- weight loss, stop overdrinking, training other life coaches… But self coaching scholars does not seem to be especially misht. I guess the niche is people who want to learn to manage their mind in order to feel better and create different results in their life. But that’s not nearly as specific as the niche worksheet.

So why do we need such a specific niche? Could we not be a broader life coach and offer a couple or few specific programs targeting niches?