Obama's sister on how presidency changed him
6 January 2017 Last updated at 00:32 GMT
Maya Soetoro-Ng, President Barack Obama's sister, has seen her half-sibling go from a "laid-back" Hawaiian teenager to a two-term president.
She tells the BBC the presidency has made her brother "wiser" and a "deeper version of himself", but expects he won't miss the intensity of the spotlight of the presidency.
Produced by Katie Beck