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r/freelance
I stopped losing money to forgotten invoices with one 10-minute Monday habit
Every client gets one status (Pitched, Active, Invoiced, Paid), and every Monday I sort by invoice due date. Anything in Invoiced for more than 7 days gets a polite nudge that day. A spreadsheet works fine for this. (Disclosure: I sell a Notion version, but you don't need it.)
The rule: A real story that teaches. One disclosed line about the product, never a link.