Sammi Kinghorn of Britain praised the "incredible feeling" of winning the gold medal after winning the T53 100m event at the Para Athletics World Championships.
The 27-year-old Scot secured her third world championship in a championship-record time of 15.93 seconds, taking silver in the 800m on Tuesday.
As she won GB's sixth gold in the competition in Paris, she told BBC Sport, "This is what I am here for."
"I want to win the world championship, and achieving that today is an amazing feeling."
Kinghorn, who had a paralysing accident on the family farm in 2010, won gold in both the 100- and 200-meter races at the 2017 World Championships in London. He also finished third in the 100-meter race in the 2019 World Championships in Dubai and the 2021 Paralympics in Tokyo.
The co-captain of Great Britain got off to a great start in the championship final on Friday, fighting off the challenges of China's Fang Gao (16.23) and Swiss star Catherine Debrunner (16.06), who was going for her fourth gold of the competition.
Kinghorn continued, "I thought I was in fantastic form. "I've been working hard in the gym and pushing myself, but I had no idea I might win the global championship.
"I nearly doubted my ability to do it. I only had to concentrate on my own race, and my only thought was to run quickly. I didn't even realise I had it when we crossed the finish line, but it was fantastic to beat Catherine.
"I know I'm quick off the line; I just have to keep thinking to myself. That is what I have discovered. Over the years, as my self-confidence in my abilities has grown, I've attempted to maintain my concentration and avoid becoming sidetracked.
When Kinghorn competes in the T53 400m final on Saturday, she will be looking for another medal.
After placing third in the T38 200m in 26.35 seconds, Sophie Hahn earlier in the competition earned her second bronze medal of the competition.
Similar to the 100m, Luka Ekler of Hungary and Darian Jimenez of Colombia earned first and second place, respectively, as Hahn placed third. Ekler won the gold medal, while Jimenez took home the silver.
The 26-year-old Hahn was happy with her performance, even though last week she claimed on social media that she is going through her most difficult mental struggle since breaking into the industry as a teenager.
"The 200m isn't my strongest event, so I'm happy to come away with a season's best and a bronze medal," she said to BBC Sport.
"I think I did all of that because I knew I had to go out strong, commit to the start, whip it off the turn, and stand tall.
"I need to improve my start and technique going forward, but I also need to work on the finish of my races to make sure I can perform well under pressure because I'm not used to having people on my shoulder," the runner said.
Hannah Taunton, who won bronze at the Paralympics, experienced grief as she finished second in the T20 1500m.
The 32-year-old came in 0.14 seconds behind Liudmyla Danylina of Ukraine on the final straight, finishing the race in 4:33.07.
'Blade Jumper' Markus Rehm of Germany won his sixth world title in the long jump in another event, setting a record and continuing to rule the T64 division.
The 34-year-old, who as a youngster was involved in a wakeboarding accident that resulted in the loss of his right leg below the knee, leaped to 8.49m in the fifth round, a height that would have won gold at every Olympics since Athens in 2004. He then matched that height once more in the final round.
It fell short of the 8.72m world record he established in Germany last month, but it was still much beyond the greatest mark of his closest rival, American Derek Loccident, whose best attempt was only 7.39m.
