The last time we saw the tough-as-nails Robin Roberts on Good Morning America, she was bidding the show farewell to start her her medical treatment for a rare blood disorder. Today, after eight days of chemotherapy, Roberts made another appearance on GMA this time through a video taped from her hospital room, thanking her viewers before her bone marrow transplant this morning. "This journey is as much about the mind as it is the body," said Roberts in the video message airing on GMA this morning (it doesn't seem to be embeddable yet, but is available here). That mind-body message, echoes a statement from her blog, where she, upon completing her last dose of intense chemotherapy on Tuesday, wrote, "My body is weak but not my mind." This morning Roberts will undergo the next step of battling MDS, a rare blood disorder, and will undergo a bone marrow transplant from her sister—and the transplant caps a tumultuous past few weeks that included the death of her mother on August 31. Roberts, of course, is elegant, badass and resilient, and many people are hoping she'll get through this the way she battled cancer five years ago. "Your thoughts. Thoughts are so powerful. You've got to change the way you think in order to change the way you feel. And let me just say this lastly, I feel the love and I thank you for it. Thank you," she added.