Alex Cooper says she practices what she wants to say out loud before negotiations.Antony Jones/Getty Images for SpotifyAlex Cooper, the host of "Call Her Daddy," signed a $125 million deal with SiriusXM in August.Cooper said that how you approach a negotiation is more important than what is said.A negotiation expert said negotiators should seek a "relational" approach in discussions.Alex Cooper, host of the hit podcast "Call Her Daddy," recently shared her tips on negotiation — one of which she learned from her mom.Cooper, who signed a $125 million deal with SiriusXM in August, said in an interview with Forbes on Friday that her top tip for negotiation is to practice the conversation."I'm always practicing before I go in because you don't want the thing you're leading with to be your nerves," she said.Although it's "nerve-racking" to go to someone in a position of power and negotiate for more, "half of business is the way that you're presenting," said Cooper, who launched the advice and relationship podcast in 2018.At this point in her career, Cooper, 30, said she knows she can walk into any room in business and close the deal."Half of it has nothing to do with my business IQ — it's really just my emotional EQ.