Speaking in an interview for the BBC Radio 4's Today Program, former Obama described to Prince Harry of the U.K. royal family the moment he left the presidency behind.
"I think it was a satisfying feeling. That was mixed with all the work that was still undone. Concerns about how the country moves forward but, you know, overall there was serenity there. More than I would have expected," Obama said.
https://www.cnbc.com/2017/12/27/barack-obama-to-prince-harry-i-felt-serenity-on-leaving-the-white-house.html
I have to be honest I felt sheer horror. lol. Glad he is enjoying his post presidency time.