"Build yourself back up. Be that big, radiant light," the singer tells PEOPLE
Credit: Barry King/WireImage

Nicole Scherzinger isn’t letting a breakup get her down.

In fact, the I Can Do That star is using her split from Lewis Hamilton to better herself.

“Sometimes people stay in relationships because they get complacent, because it’s comfortable for them, because they don’t want to be alone,” she tells PEOPLE. “It’s a new chapter in my life. I’m going through a very transformative time in my life.”

Since becoming single in February after seven years with the Formula One racing driver, the singer, 36, says she’s used the opportunity to find her “ultimate destiny.”

“For me, what’s helped me to get through this is I’m a quite spiritual person,” she says. “It’s grounded me, and I realize that I do have a great purpose in life. If relationships or people in your lives are meant to be, then they will come back around, but that shouldn’t be what’s holding you back.”

Scherzinger advises other newly single people to “focus on yourself.”

Says the singer: “A lot of the time when you’re in a relationship, you lose yourself and you lose who you are and what makes you special. You’re always putting all your energy on someone else, so find yourself again. Build yourself back up [and] be that big, radiant light.”

I Can Do That premieres Tuesday at 10 p.m. ET on NBC.