Ask HN: In building your startup, what are your biggest pain points?

Indeed. This is probably where the biggest risks are for whatever I am working or have worked on. Finding the intersection between what technology is capable of (product) and where there is business value (market), especially given that most of the avenues have already been explored, is hard.

I have ideas where product can be built within a few months (easier product), with a lot of competition already (market challenges). I also have ideas where there is technological uncertainly (product feasibility?) where much bigger time and investments are needed (which adds to economical/market challenges).

I second that. As a lone founder with a technical background, I suck at sales.

Lol, that's not hard because it's hard, that's hard because you make it hard. These are 2 whole different problems. A name certainly can help to a startup (i.e. seo), but a startup is only a startup for it's rapid growth, and because Google searches are not undergoing rapid growth most of the time, this is not a startup problem but just an identity problem, which is a struggle but not a problem.