President Barack Obama says he wouldn't run for a third term even if he could. He says the presidency takes a toll on family life, and the office "should be continually renewed by new energy and new ideas."

Obama tells CBS' "Sunday Morning" that he's not yearning for a third term is because he's confident that things are a lot better in the United States than when he came into office.

Obama says the thing that makes him happiest about his presidency ending next January is a chance to get out of what he calls the "the bubble." That's what he calls the tight security controls over his travels outside the White House. He says the bubble is "the hardest thing about the presidency."



He previous said he believes he could win if he were not barred by term limits from running.



He is expected to push over the next year for a Democrat to again take the White House, but will not endorse a candidate.



In the interview, Obama also admitted to at times "absolutely" wondering why he ever ran for the presidency, nothing that he gets "tired" and "frustrated"by the job.

"And yet, there has not been a day that I have not walked into the Oval Office and understood that at no point in my life will I ever have the chance to do as much good and make as much of a difference in the lives of people as I do right now," Obama said.



The Associated Press contributed to this report.





