Magda Linette revealed "emotional management" has been key to her best grand slam singles run after upsetting Caroline Garcia to move into the Australian Open quarter-finals.
The unseeded Pole beat fourth seed Garcia 7-6 (7-3) 6-4 on Rod Laver Arena on Monday to move into the last eight for the first time.
Linette had never been beyond the third round of a major before this tournament, but she will face Karolina Pliskova for a place in the semi-finals.
The world number 45 will celebrate her 31st birthday next month and feels she is benefitting from being more mature after breaking new ground in her 30th main-draw appearance at a grand slam.
She said: "We worked a lot actually about my emotional management. I think dealing with some kind of losses, but not necessarily match losses, just even throughout the match losses, like small mistakes here and there.
"I think I've never really dealt with them very well. They carried over later on for next point, then another one. It was taking me just too long to get over them.
"I think of course we work so much on my game. We worked a lot on changing the directions and the depth of the ball.
"But I think this approach of really trying to look a little bit different, grow up a little bit emotionally, like that was a big thing for us as a team. All of us approached it. It wasn't only me, but it was the coaches that brought this to me."
Asked how she works on emotional control, Linette added: "I think it's just how do you try to approach the defeats and the mistakes, and are you making the right mistakes, can you then recognise it and move on and deal with them a little bit better. I think I was just getting too negative and too harsh on myself because I feel I'm quite demanding.
"On the other hand when you try to go to that other spectrum, when you're okay with everything, it's also not the best. You really need to stay on top of things and be proactive with it, which ones you're doing good and not.
"I think recognising it, you try again and again and again. Eventually you start recognising which ones were the right ones to deal with.
"It's very difficult. I'm [almost] 31 and I'm just getting it right, so obviously it was one of the toughest things for me. But I'm happy. I'm happy that I have this opportunity, that actually I tapped into something that finally I'm breaking something that you can't really measure it in any way. For me, it was something really difficult to change."