Debbie Harry is learning the downsides of getting older.

Before the Blondie frontwoman turns 80 on July 1, she spoke in-depth about her feelings toward aging in a new interview with — including how it feels to have outlived many of her friends.

"I don’t walk around thinking every minute, oh my God, I’m going be 80 — but that’s sort of how I feel," said the rock icon. "My mother used to say in her head she was 25 and I’m the same."

Harry explained she feels "thinking about [aging] all the time could be your downfall," adding that she doesn't "really want the same kind of life I did when I was younger" because she's already "done that."

"That’s the beauty of aging — you know what it’s about," said the "Call Me" singer. "You have it in your heart and soul and your memory bank … or does that sound like an excuse? Should I go out and party every night?"

Looking toward her milestone birthday this summer, Harry detailed plans to "have a whopping great party with everyone there" before telling the outlet: "Though one of the bad things about aging is everyone’s gone already."

The Rock & Roll Hall of Fame member then recalled, "In the 1980s, or maybe 1990s, there was a show at [the downtown nightclub] CBGB’s gallery. I went around the room and 50 per cent of the musicians in the photos were gone and that was years ago. It’s what they call diminishing returns."