Actress Shilpa Shetty, who has seen ups and downs in her acting career, says success means keeping oneself grounded. The 37-year-old, who made Bollywood debut with 1993 movie "Baazigar", has done many successful projects like "Main Khiladi Tu Anari", "Dhadkan", "Life In A...Metro" and "Apne". In 2007, she also won Britain's reality show "Big Brother". She shared her thoughts in a Twitter post and wrote: "Only touching the sky doesn't define your success. The real success story will be if you don't take your feet off the ground while touching the sky."