Absolutely remarkable story of a guy who became a Navy Seal, Doctor and Astronaut. On top of that, there's a really crazy story about his youth. I can't recommend this highly enough. I also want to mention that I'm not a "military type of guy" at all (the podcast is hosted by a former Navy Seal named Jocko Willink) and I'm generally anti-war (other than in true self-defense situations) but I still think one can find inspiration in hearing these stories.
The interview is around 4 1/2 hours but listen to the first 30 minutes or so and I think there's a good chance you'll be hooked. (I listened over the course of 3 days). Note that I initially skipped the intro and went right to the interview, which starts at 7m 30s. After I got done listening to the interview I went back to listen to the intro ("The Letter").
I recommend watching it (not just listening) to see the seriousness, focus, and humility of Jonny Kim.