(Cover) - EN Showbiz - Oprah Winfrey wishes she had a co-host when shes feeling too tired to work.

The American star is best known for her self-titled television series, which has become one of the most successful shows in history. She has been ranked the richest African American of the 20th century, the greatest black philanthropist in American history, and was once the world's only black billionaire.

Despite her massive success as a talk show host, the 56-year-old says that on many occasions she wakes up and does not feel inspired.

Yes, many times. But I have a TV show and I dont have a sub host so I have to show up even when Im not feeling 100%. People who watch me over the years, they know. They say: You were looking tired today. I am tired people! she told the British edition of OK! magazine.

The talk show giant is renowned for her successful celebrity interviews. In 1993, Winfrey hosted a rare prime-time interview with Michael Jackson, which became the fourth most watched event in American television history as well as the most watched interview ever, with an audience of 36.5 million.

Oprah prides herself on the fact that she will always try and keep her feet on the ground despite being an international star.

Ive become one of those people who has been lulled by the success. I pride myself on being centred enough not to be affected by what the outside world thinks, she added. (C) Cover Media