Amelie Mauresmo does not intend to make the same mistake twice after booking her place in the semi-finals of Wimbledon for the second year in a row.
The No 3 seed continued her good form - she is yet to drop a set - with a 6-3 6-4 win over Anastasia Myskina in just over an hour on Centre Court this afternoon.
It was a similar story 12 months ago, when the French former world No 1 eventually succumbed to the challenge of then defending champion Serena Williams after at one stage finding herself leading the American one set to love and then 3-1 up.
Mauresmo, 25, though, believes both her game and focus have come a long way since that encounter last summer at the All England Club.
"I have played already two semis in the last two times I came here, and was pretty happy about the way I played today," she said.
"I was very close last year. I thought that my game was pretty consistent last year, a little bit like the way I played today, really aggressive, coming in very often.
"I was very close to beating Serena in the semi last year. I really think on a few occasions that I might get to make the difference, I will need to be a 100 per cent on these points and make sure I take these opportunities."
Mauresmo again used her serve-and-volley game to great effect, leaving 2004 French Open champion Myskina with few chances to break her rhythm.
The Frenchwoman forced a first break point in game four, volleying at the net to great effect, before a long return from Myskina handed her the advantage at 3-1.
Although she was herself broken in game seven, Mauresmo was soon back in command again as Myskina then immediately lost her own serve and Mauresmo managed to close out the set 6-3 in half-an-hour.
The crucial break in the second set game in game five, when the Russian No 9 seed netted a routine forehand to lose the opening point, from which she failed to recover and trailed 3-2.
Mauresmo then faced two break points on her serve in game eight, which Myskina gratefully accepted at the first time of asking with a forehand winner down the right to level at 4-4.
The No 3 seed had a chance to break back straight away, but was long with her backhand return. Mauresmo, though, did not waste a second opportunity, this time coming to the net to make no mistake.
That left the 25-year-old serving for the match and place in the semi-finals for the second year running, which she secured to love and completed a 6-3 6-4 victory in one hour and nine minutes.
"I decided to put the pressure on her right from the first game and make her play as many shots as I could, especially to pass me," said Mauresmo.
"I was much more comfortable on the court [than Monday], much more in my rhythm, and really enjoying the game. I think I also mixed it up pretty well."
Myskina had never reached the quarter-finals at the All England Club before, and had gone about it the hard way this year, with two of her previous matches needing three sets. But the 23-year-old - once ranked two in the world - was content enough with her grass-court campaign at SW19.
"I think I have improved since last year," she said. "I am really happy with my game right now.
"She came to the net a lot today, which was good for her because from the baseline, I felt much stronger. If you are happy with your game, you look forward to come back and play even better."
Mauresmo will play world No 1 and top seed Lindsay Davenport.