Cathryn Lavery is the founder of BestSelf and the writer behind Little Might. She builds and publishes tools for AI-assisted work, including Diagram Design, a skill for producing editable visual explanations.[1]
Start with Diagram Design →
Links
Cathryn Lavery: GitHub Little Might 
X LinkedIn Instagram Founder and owner · BestSelf Co
Career
Lavery says she bootstrapped BestSelf, sold it to private equity in 2022 and bought it back in 2024. Her current writing describes a shift from hiring developers to making software herself with AI coding tools. Little Might publishes the lessons as practical walkthroughs for operators becoming technical and builders learning to run a business. Her sale-and-repurchase essay gives the business context for that work.[1][2][4]
Contributions
Diagram Design turns a natural-language request into one self-contained HTML file with SVG graphics. It includes diagram types, a shared style guide and ways to bring in an organization’s palette and fonts. Import and export paths connect it with existing diagram formats. The output can be opened in a browser and edited as source, making a diagram easier to revise alongside documentation. The repository provides installation paths for several agent hosts rather than requiring a separate drawing application.[3]
Tools, writing & talks
Tools
Start here
Diagram Designgithub.comAn agent skill for creating branded diagrams as self-contained HTML and SVG, with import and export support.
Try Diagram Design on a small system you can explain in plain words. Open the resulting HTML and revise one label or relationship; that makes its editable-output approach concrete before importing a larger existing diagram.
Creator and repository owner[3]Original source- Yap Studiogithub.com
An agent-driven editor for talking-head videos, with cuts, captions and review notes.
Creator and repository owner[5]
Writing, research & talks
- I Sold My Company, Then Bought It Backlittlemight.com
Lavery’s account of selling BestSelf and later returning to ownership.
Author[4]