World number one Victoria Azarenka moved within two wins of her second Grand Slam title of the season on Tuesday, but admitted she might never be satisfied with her career. The 23-year-old, who captured the Australian Open this year, is the first Belarusian to make the last four in New York, achieving the feat with a 6-1, 4-6, 7-6 (7/5) win over defending champion Samantha Stosur. Victory also allowed her to maintain her world number one spot. But happiness appears to be a long way off for the statuesque, Monte Carlo-based girl from Minsk. “I feel like I will never be satisfied, you know, sometimes, that even though I’m at the peak of my career right now, I feel like I want to do better,” said Azarenka. “The ambitions are really high, but I don’t like to jump ahead too much. That’s what I felt kind of was holding me back before is to have that image that I want it so bad that I’m going to go for it. “Now I just try to execute being a good player, improve myself as a player, my physical aspect, and the result is second for me right now.” It wasn’t always so. Azarenka was long-touted as a star of the future when she started on the tour in 2006. But it took her 14 Grand Slam events before she made her first quarter-final at the French Open in 2009 and it wasn’t until Wimbledon in 2011 that she reached her first semi-final at a major. Her world ranking mirrored her bumpy journey on the WTA Tour — a season-ending seven in 2009 slipped to 10 in 2010 before a top-three place at the end of 2011. She hit the top spot following her Australian Open win in January, lost it briefly to Maria Sharapova after Wimbledon before regaining it ahead of the Olympics.