A practical kit for freelancers, trades, and agencies who keep doing extra work that never hits the invoice. You get a one-page when-to-stop rule, 14 copy-paste emails and SMS (pause work, price the extra, confirm in writing), a one-page change-order form, and a ChatGPT prompt to rewrite each line in your voice. No fake urgency. No guilt. Swap in the job, send, then do not start until they reply.