Ask HN: Built a PaaS and have revenue of $500 per month, what do I do next?

I'd like your advice on what I should do next. I have built a very small business from nothing, and I'm doing $500 per month now.

I am profitable but it's nothing to write home about. This last quarter I made relationships with bigger clients and they're going to be doing a lot of business this quarter which will increase my $500 per month revenues.

Ideally I want to have this business sustain me and my wife, but I'm not there yet. What should I do next?