Decide how well your product does. The first adopters of your product are the ones who decide how well your product does. Most people won’t tell others about your product unless it’s bad.
After the first adopters comes a majority of the other people who end up buying your product. The early majority is followed by the last majority, and then the laggards.
If the first adopters like your product, they will share it. If you please the first adopters, you will be able to please the early majority, late majority, and the laggards. Some of your first adopters are also going to be your top clients. Look for those top clients. They are the ones who are going to tell the most people about your product.