After Justin Bieber and Selena Gomez split, Justin's been on something of a downward spiral in his personal life.  But to hear Selena talk, it's the best thing that ever happened to her.

Speaking to Seventeen magazine for its March issue, Selena describes 2013, which saw her music career rise to new heights, as the year "when I really started feeling powerful."  She explains, "I had always been the underdog secretly. I was on Disney when it was Miley, the Jonas Brothers, and Demi. I questioned the way I looked, acted, sang, and wrote."

"Then I turned 20, went through a really bad breakup, and realized I needed to have 'Come & Get It' be amazing," she continues, referring to her hit single. "I wanted it all to be me. I'm glad it's taken me this long to get where I am because now I am ready for it."

With power, however, comes a confidence that could be hard to take from a girl -- if you're an insecure guy.  "I actually talked to Katy Perry about guys who are intimidated by strong girls," Selena reveals. "I haven't found someone yet who could understand my lifestyle, support it, love me through it, and not be threatened by it. It's hard."

In fact, Selena says she realizes she might "scare" some guys off, because of her drive and ambition.  She describes her attitude as, "I want to change the world! I have dreams! What do you want to do?" But, she says, "I only know how to be me."

Selena's confidence has even allowed her to brush off that diss from Lorde last year. As you'll recall, the "Royals" singer said that as a feminist, she didn't like Selena's hit "Come and Get It" because the lyrics which state "When you're ready come and get it" and "I'll be sittin' right here, real patient" are "pathetic," adding, "I don't think girls should be listening to that sort of thing and think that it's normal or healthy."

Now, Selena tells Seventeen of Lorde, "I'm going to support her whether she likes me or not because I think she's doing great things. Some day I will see her and we'll be coo