I was inspired by the book "Traction" by Gabriel Weinberg. The book was written back in 2015, before IndieHackers and other websites became "mainstream". I thought: Wow, they (Gabriel & his co-authors) had it really hard!
Nowadays I could just take various interviews that are already published & analyze / extract acquisition channels data & find a more comprehensive list of acquisition channels that work. So that's what I started doing.