Jamie Foxx recently talked about his sister DeOndra Dixon and how she keeps him grounded. Dixon has Down Syndrome and Foxx says that she taught him ?how to live.? He said: ?DeOndra has a light on that has been on since she was born.? His sister has lived with him since she graduated high school in 2002. Fox says DeOndra is ?the main purpose? and wanted to make sure she had a place to stay.