The US Open champion said the only secret of her success is hard work.
World number one Justine Henin was dumped out of the German Open on Thursday, losing 5-7, 6-3, 6-1 to 13th seed Dinara Safina of Russia in the third round.
The world number one, who missed the Australian Open last year, posted a 6-2, 6-2 win against Japan's Aiko Nakamura.
World number one Justine Henin scored and easy win over Marion Bartoli while Amelie Mauresmo went through when her Russian semi-final opponent Nadia Petrova pulled out with injury.
The defending champion was given a scare by 15-year-old Czech Nicole Vaidisova before claiming her place in the U.S. Open second round.
Justine Henin will face Frenchwoman Tatiana Golovin in the final of the Zurich Open.
Amelie Mauresmo shocked the world number one 6-7, 7-5, 6-3 in the semi-finals of the Amelia Island championship.
As recently as last week Justine Henin spoke warmly of continuing her French Open love affair, of having another crack at Wimbledon and defending her Olympic title in Beijing.
The Belgian took two hours 28 minutes to beat 16-year-old Tamira Paszek 4-6, 7-5, 6-1 at the Dubai Open.
Top seed Amelie Mauresmo and third seed Maria Sharapova also marched on with straight-sets victories at the US Open.\n
Also making it to the last eight were Svetlana Kuznetsova and Czech teenager Nicole Vaidisova.
The Belgian will face Nathalie Dechy in an exhibition match this weekend after being out for three months with exhaustion.
The defending champion will play eighth seed Marion Bartoli of France.
Justine Henin extended her unbeaten run to 28 matches with a 4-6, 6-2, 6-4 win over Russia's Svetlana Kuznetsova in the final of the Sydney International on Friday.
World number one Justine Henin-Hardenne will miss the Wimbledon championships later this month.
Women's world number one Justine Henin shrugs off comparisons to male counterpart Roger Federer and says she is giving little thought to her place in sporting history.
Elena Likhovtseva and Nadia Petrova also made it to the last four.
Justine Henin maintained her recent grand slam mastery over Serena Williams with a 7-6 6-1 triumph in the quarter-finals of the U.S. Open on Tuesday.
Justine Henin beat third seed Jelena Jankovic 7-6, 7-5 to capture her second Toronto Cup.
Former champion Justine Henin, who said last month she was making a return to top-level tennis, has been granted a wildcard for the 2010 Australian Open, organisers said on Monday.
The world number one beat China's Peng Shuai 7-5, 6-2 in the third round.
Justine Henin reached her third final in fourth months since her comeback when she brushed aside Shahar Peer in her semi-final at Stuttgart's indoor clay tournament on Saturday.
Ana Ivanovic beat the Russian 6-2, 6-1 the enter the French Open final.
Four-time champion Justine Henin showed nerves of steel to beat Maria Sharapova of Russia 6-2, 3-6, 6-3 in their delayed French Open third-round match on Sunday.
World number one Justine Henin of Belgium fought back from the brink of defeat to reach the semi-finals of the German Open today, beating fifth-seeded Serbian Jelena Jankovic.
Justine Henin beat Italian Mara Santangelo 6-2, 6-1 in the quarterfinals of the Warsaw Cup.
The Belgian fresh from her victory in Dubai, bids for a Gulf double when she starts as overwhelming favourite at the Qatar Open.
Kim Clijsters and Justine Henin were forced to draw on their vast experience to avoid being eliminated from the Brisbane International on Thursday. The two Belgians, both back on the professional circuit after retiring from the sport, scraped through their quarter-finals to remain on course for a possible showdown in Saturday's final.
Former world number one Justine Henin is set to play in next month's Sydney International after being granted a wildcard by organisers. Henin, who announced her comeback to the women's tour in September after a 15-month absence, makes her return in Brisbane in early January before playing in the Sydney tournament as part of her preparations for the Australian Open the following week.
Justine Henin continued her remarkable return to competitive tennis with a 7-6, 7-5 victory over 19th seed Nadia Petrova to reach the semi-finals of the Australian Open on Tuesday.
Former World No 1 Justine Henin plans to make her return to tournament tennis at next year's Brisbane International as part of her preparations for the Australian Open.
World number one Justine Henin said on Monday she had set her sights on a future of leisurely travel and adult education as a way of making all the sacrifices required of her seem worthwhile.