The 2000 Wimbledon semi-finalist lifted the lid on her early years in her autobiography, where she claimed her father would whip her with a belt if she failed on court.
Dokic recalls she was once beaten so badly she lost consciousness.
Dokic would go on to reach the quarter-finals of that competition, only her second Grand Slam.
He was also involved in a physical altercation with a camera crew at the Australian Open.
This a 6 month progress before and after photo.
Now, as she soaks in the sun in Croatia, Dokic is celebrating her success by sharing bikini snaps on her Instagram.
Wearing a white bikini and standing in front of an ocean pool, Dokic unveiled her healthy figure to her 23,000 followers.
Dokic rapidly ascended through the world rankings after her Wimbledon breakthrough, but her time in the world elite was beset by off-court problems.