Built for myself. Published because they worked.

Writing

Notes from building the tools. Mostly about what the data showed me when I started actually measuring what I was doing — trading, studying, tracking money. Each piece is a standalone read; the templates that grow out of them are in the store.

What Tracking 200 Options Trades in a Spreadsheet Taught Me About My Own Bad Habits
I thought I was a disciplined trader. I had rules. I had a thesis for every entry. Then I started logging every single trade, and the numbers told a different story.