Heather Watson admitted she finds it hard to control her temper after successfully channelling her aggression into a thrilling comeback win over Caroline Garcia at SW19.
British No.1 Watson set up a second round clash with Daniela Hantuchova following her mammoth 1-6, 6-3, 8-6 victory that spanned two days on Court No.12.
Bad light on Monday night left the clash poised at one game apiece and the 23-year-old from Guernsey was forced to save three match points before prevailing against the 32nd seed.
Watson's victory also featured a code violation for swearing as the aggression that helped her fight back from a set down got the better of her.
"It's the heat of the moment," she said. "I don't even know what I'm doing till after it's done.
"I don't even realise I've done it, and, yeah, I say things that I shouldn't say. I apologise to anybody that's offended. I need to control it, and I just can't."
Watson admitted to feeling nervous as she closed out the match in the 14th game of the third set. She also said she hopes to take some, controlled, aggression into her match with Hantuchova as she refused to get carried away with thoughts of facing Serena Williams, a possible third-round opponent.
"All I'm thinking about is my next match," she added. "She (Hantuchova) is an experienced player. She's been at the top of the game, she plays very well on grass. So it definitely won't be easy."
Laura Robson, meanwhile, insisted there were "many positives" from her straight sets defeat to Evgeniya Rodina, only her second match in 17 months.
Robson was making her first Grand Slam appearance since the 2014 Australian Open and despite being unranked at present, is determined to get back into the world's top 50.
"I'm pretty confident that I have the ability to get back to where I was, if not higher," the former world No.27 said.
"It's going to be a long process to get there, but I'm very excited that I have another chance to do it."
She added that she had no regrets playing Wimbledon with so little preparation: "This is my favourite tournament of the year, it's my home tournament.
"I couldn't imagine not playing it."