Don't be for everyone.
Start with the smallest viable audience.
Not the biggest, not the most but the smallest audience that allows you to run a successful business.
Why?
First, you are likely a small sales force and have little time or money to reach everyone.
Second, small forces you to focus.
Focus ups the stakes for every customer, as you can't afford to lose them. This will lead you to obsess about them, to understand them better than anyone else. This level of empathy builds the trust required for people to buy from you. You get the deepest knowledge in one corner of the world. As you do more, you get better. And this allows you to solve their problem with a level of skill that no one else can. This audience knows each other, and they talk to each other. They will then share your amazing work with people like them who need what you offer.