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Unless you're a huge standup comedy nerd – the kind who can justifiably brag that you've seen everyone "before they were cool" – you probably hadn't heard of Amy Schumer as recently as five years ago. Today, Schumer's everywhere, winning an Emmy for her sketch show Inside Amy Schumer and writing and starring in Trainwreck, which was directed by Judd Apatow. Oh, and also: she just negotiated an $8 to $10 million book deal, after canceling an earlier deal for $1 million – as Vulture put it, like a boss. Here's what you can learn about salary negotiation from Amy Schumer:

1. Know your worth.

"I had a whole deal, but I decided to wait — I thought I would make more money if I waited," Schumer told GQ in an interview earlier this summer, The New York Times reports.

In a world where women often report feeling uncomfortable negotiating salary, and where the gender wage gap is at least partly due to women choosing (or, at least, "choosing") lower paying work, the simple act of standing up and saying, "This is what I'm worth," is revolutionary. (To find out what the market will bear for your skills, check out PayScale's Salary Survey.)

2. Timing is everything.

Schumer's 2012 book deal with HarperCollins was for $500,000. Before she signed the contract, however, Inside Amy Schumer debuted, and a competing publisher offered her $1 million. HarperCollins upped its offer to match. But Schumer's investment in her TV and film career meant a lack of time to work on the book. She canceled her contract, leaving herself free to accept the $8 million offer later on.

3. Don't sign on the dotted line until you're ready.

How did Schumer parlay that initial $500,000 offer into $1 million? By not signing her contract until she was good and ready.

Of course, it's statistically unlikely that you're a comedy sensation who has recently won an Emmy, so you don't want to leave offers on the vine too long. But, don't let people pressure you into signing something before you've had an opportunity to do your research and determine whether the offer is right for you.