Ask HN: How to grow a good SaaS product?

Over the last 2 months, I've managed to build a very strong product where users send long messages about how much they love the product and then proceed to pay.

It even blew up on product hunt, but I still find growth to be challenging.

I'm doing everything, outbound, inbound and what have you.

Is it a naturally slow process? Is patience the only virtue?