Lindsay Lohan has a 10-year plan. "I want to get married before I'm 30," the 20-year-old actress says in In Style magazine's November issue, on newsstands Oct. 20. "And have my house. And make the kind of record I want. And I'd like to win an Oscar before then."

Sounds like the world-famous party girl is getting serious. In July, Lohan was publicly scolded by a studio executive for her absences on the set of the upcoming movie, "Georgia Rule." She missed work, she says, because she went out for a friend's birthday after a day of filming in intense heat.

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"I tried to please my friend and I ended up getting sick," she tells the magazine. "It's about learning to say no more than yes. I'm a people-pleaser. But you can't always make everyone happy."

Yes, Lohan's made some oh-no-she-didn't choices — she's only 20, after all — but what was her favorite mistake?

"Falling in love for the first time and abusing the relationship," she says. "I was growing. It's the best thing that ever happened, but I wasn't ready. I moved too fast."