Mine is the “capturing” part. I know there are aggregating services out there like Readwise (which I haven’t yet used) but I take notes from so many different sources nowadays such as paper notes, photos, screenshots, podcasts, YouTube videos, movies, articles, etc.
Anything that isn’t inherently text based becomes a pain to know how to capture, in what format and where to put it temporarily. I know I need some sort of digital, cloud-based “in-tray” or “holding pen” before these get processed to go into Obsidian but I haven’t found a solution just yet.