Start without clarity
It’s totally normal to not know what to expect to happen from writing. Writing generates opportunities you can’t expect. My method is to keep adding things to my website, regardless if they make sense in the moment. Retroactively, you can connect the dots. You can use tags to link posts. So if I wanted to suddenly get into a conversation with a VR founder, I could send them a /virtual-reality sub page.
It’s only a % of what’s on my site, but I can slice specific cross-sections through my full range of interests (which is illegible as a whole). Since I have permission to explore anything, I’m pretty generative, but I've found that when I set specific, restrictive rules, I block myself.
Over time (ie: every 6 months to a year) you might gain clarity on if it’s worth converging around a single direction (ie: band reviews vs. teaching music vs. something unrelated).