As I mentioned before in this subreddit, I did have a sale recently, but that was for my older product. Today, another the breakthrough finally happened. I made the very first sale for my new product, the one I have been developing on for half a year.
It takes 6 months of development, plus marketing since early June (including 10 YouTube videos and several blog articles), I finally made my first sale. Honestly, the road to making my first dollar has never been this long for me. I genuinely have doubts about whether this will succeed in the long run. But for now, I will keep pushing forward.