Every trader I know starts journaling in a spreadsheet, and every one of them abandons it within a month.
Not because journaling is useless, but because the spreadsheet can't answer the questions that actually matter: "which of my rules costs me the most money?" or "am I cutting winners too early?"
A flat sheet of rows can't tell you.
Tools like RizeTrade solve this with a proper data model, and in this post I'll walk through how to design one yourself.
The problem is almost always the data model.
