Robin Roberts broadcasted a video earlier today from hospital thanking fans for their support just before she undergoes life-saving surgery.

The 'Good Morning America' anchor has been in a hospital in New York for 11 days while being treated with chemotherapy in preparation for a bone marrow transplant, the donor being her sister Sally-Ann Roberts. The 51-year-old was diagnosed with myelodysplastic syndrome (MDS) earlier in the year; a disease in which the bone marrow is unable to produce enough healthy blood cells. The disease apparently might have been caused by the chemo she had in 2007 to treat her breast cancer. She addressed a camera looking extremely thin and off-colour wearing some loose clothes and told the viewers on her GMA blog: 'Thoughts are so powerful. You've got to change the way you think in order to change the way you feel.' She ended the clip with gratitude towards her fans: 'I feel the love and I thank you for it. Thank you.'

She had also written on her blog a rather heart-warmingly positive message some days ago about preparing for her hospital stay. 'Last Sunday to lift my spirits I threw a little party at my apartment for my "GMA" family', she wrote. 'The next morning I walked through the hospital doors, with my guardian angels -- mom & dad -- back together and blazing a trail ahead of me.'