Taylor Swift revealed how she plans to cope with difficult days at her London Eras Tour concert Friday evening following last week’s foiled Vienna terror plot.

She shared the tidbit with her cheering fans when they gave her a standing ovation following her performance of the “Evermore” track, “Champagne Problems.”

“Not only was I recording a video in my head of that, but I guarantee my parents were just recording that on their phones,” she smiled.

“Anytime I’m having a sad or a bad day, not only will I play the video in my mind, but I’m gonna revisit that moment a lot. Thank you so much for giving that to us.”

Friday marked Swift’s second time back on stage since she performed in Warsaw, Poland in early August.

She was scheduled to bring her record-breaking Eras Tour to Vienna after Warsaw but was forced to cancel her shows after a terrorist attack was planned to take place during one of them.

The 34-year-old Grammy winner’s three shows — which were set for Aug. 8, 9 and 10 at Ernst Happel Stadium — were canceled the same day two young men were arrested for the horrific plot.

A third suspect was later arrested.

They planned to kill “as many people as possible” using knives and possibly handmade explosive devices, Head of the Directorate of State Security and Intelligence Omar Haijawi-Pirchner said Aug. 8.

On what would have been Swift’s first Vienna show, London’s mayor, Sadiq Khan, told Sky News that fans could expect to “safely” see her perform in England’s capital city.

“We have a huge amount of experience in policing these events,” he said. “The police work closely, not just with City Hall and with councils, but also with those who host concerts, like the Taylor Swift concert coming up over the next couple of weeks.”

Swift has not yet publicly commented on the matter.