Gwen Stefani thinks her marriage is miraculous.

The 42-year-old No Doubt singer and fashion designer and her husband Gavin Rossdale, 46, will celebrate their tenth wedding anniversary this week. The pair share two sons together, Kingston, six, and Zuma, four.

Gwen is amazed by her beautiful relationship with Gavin.

"[It's] a miracle. My biggest accomplishment is my marriage so far," she gushed to the October edition of Marie Claire magazine.

"Because it's hard, everyone knows it's hard. It is something that I always wanted to do successfully. It was a dream of mine. I like the official-ness and the family-ness of it all, having the same name and making decisions together."

Gwen feels like she and Gavin complete each other.

She is enthusiastic about their future together.

"Better than it's ever been. Like, we're learning about each other all the time," she shared. "He's an amazing dad, he works so hard -- I can hear him writing songs through the wall, and it is at a much quicker pace than me! He balances me out. And he -- he never stops liking me, which is awesome! It makes me feel happy, that someone likes me as much as he does."