One year after discovering she had a rare heart condition which required open-heart surgery to fix, singer Amy Grant said she feels "fantastic."

"I just have this feeling like this is going to be the best year yet. I love it," Grant told Robin Roberts on "Good Morning America" Wednesday.

February is American Heart Month and cardiovascular disease is the No. 1 killer among all Americans. Women are impacted the most -- one in three die from the disease, according to the American Heart Association.

"My birth defect was an encroaching killer -- and I had no idea," Grant said. "So my advice would be take care of yourself. The world needs you. Even if you feel like everything is fine, you don't really know what's going on inside."

She urged women not to put their health "on the back burner" and to take care of themselves.

Grant helped raise awareness about heart health with a performance of "Every Heartbeat," a hit from her 1991 album, "Heart in Motion." It was her first performance since undergoing surgery. The album, which turns 30 years old on March 5, was nominated for album of the year at the Grammys and also spawned the hit, "Baby Baby."

Thirty years later, the Christian pop singer said "Every Heartbeat" is a song which "absolutely" has another meaning to her, especially after her health scare.

"I feel like I've been given a second chance," Grant said. "It feels like this crazy kaleidoscope that started 30 years ago that's just brought into focus the gift of gratitude, joy for the gift of each other, joy for music."

Watch Amy Grant perform "Every Heartbeat" in her first performance since she had open-heart surgery:

Grant had open-heart surgery last year to fix a rare condition called partial anomalous pulmonary venous return (PAPVR). According to the Mayo Clinic, PAPVR is a congenital heart defect which causes a mixing of oxygen-rich blood and oxygen-poor blood as it flows into the heart's right atrium instead of the left due to incorrect placement of the pulmonary veins.

Last February, Grant revealed on Twitter that she had gotten a check at her doctor's suggestion due to her father's heart history and, after a "battery of tests," her condition was diagnosed.

"The first good news is that I am completely asymptomatic," Grant told fans at the time. "The second good news is that it's fixable, so instead of concerts and camping trips this summer, I am going to take care of my heart. Are you taking care of yours?! Please do."

In June, Grant successfully underwent open-heart surgery to fix her PAPVR. About a week after the procedure, the six-time Grammy winner said her recovery had felt "miraculous" and she credited "something supernatural" for helping her get through it.

Grant appeared on "GMA" in August to give an update on her health and to express how "grateful" she was to have caught this rare condition when she did, all thanks to listening to her doctor.

"If I have got something wrong, anybody could have something wrong," she told Robin Roberts. "My message would be, take a minute and take care of yourself. You don't know that something is wrong unless you make sure it's right."