Technical founders who've learned how to market, how did you do it?

We’re at a point where our product is good enough to be marketed. We have a good understanding of who our target users are, but my co-founder and I are both technical people, so we find it challenging to approach our marketing strategy.

We've been slowly dm-ing our target personas, and posting content on communities where our target market hangout. But I find it to be a slow, tedious process.

As a product person at heart, sometimes, I go back to my comfort-zone (building the software), rather than coming up with marketing content / ideas just because the results are immediate.

For founders who’ve learned how to successfully market their product, how did you do it?