This FundsforWriters post is aimed at working freelancers who've kept steady clients for years and suddenly realize their rates don't match reality anymore. It pushes a few grounded habits: build a history before you ask, pick a sane moment (new year or anniversaries), and write the raise email like you mean it - structure, politeness, and clarity beat a sloppy Slack ping.
It also argues for negotiation literacy: ask for a bit more than you'll happily accept, plan for compromise, and sometimes trade money for schedule relief when budgets are frozen. If you write for money - not only for novels - this is the unglamorous stuff that keeps your career stable when the rest of publishing feels chaotic.
(Shortened and summarised to avoid devaluing the source)