Oprah Winfrey is embracing aging.Photo by Sonja Flemming/CBS via Getty ImagesOprah Winfrey, 70, says she's at peace with aging and knowing "there isn't as much time left."Winfrey reflected on the life lessons she's learned during an appearance on Today with Al Roker.The average life expectancy in the US is 80.2 years for females and 74.8 years for males, per the CDC.Oprah Winfrey isn't afraid of getting older.During an appearance on Today on Tuesday, alongside weatherman Al Roker, Winfrey spoke about the life lessons she learned from growing older.When Roker — who was celebrating his 70th birthday — asked how the talk show host felt when she turned 70 earlier this year, she said she was "excited to make the number.""I'm excited to make every number.