Sharing the broad process I follow. Very similar to how I manage Prohjects. Same between both writing words and code.
Discovery. Ideate and consume information.
Artifacts. Write to disk. Whiteboard. Notebook. Sticky-note. Index card. Scratch paper. Obsidian.
Pro tip. It helps to always have something around to create the placeholders. May or may not have dry-erase boards on every available wall.
Prototyping. When there’s time. Rapid iteration. Typing fast helps.
Slow down. Take a break.
Delivery. Refine. Ship when good enough.