"I coach anyone on anything" is the hardest offer to sell. A niche isn't a cage — it's a magnet. Here's how to pick one without boxing yourself in forever.
A specific niche makes your marketing obvious ("that's for me"), your referrals easy ("you should talk to her"), and your expertise believable. Generalists compete on price; specialists command premiums.
Find where three things overlap: a problem you've genuinely solved, a group you understand and like working with, and a stake high enough that people will pay to fix it. That intersection is your niche.
"Confidence coach" is a topic; "confidence coach for women returning to work after a career break" is a niche. The added specificity is what makes the offer land.
You can evolve as you learn who you serve best. Starting narrow gets you traction faster; you broaden or pivot from a position of momentum, not confusion.
Once you know who and what, package it (writing a coaching offer) and take it to the communities where that person already is (getting first clients).