It's really hard to guarantee things in life. I guarantee if you get up in the morning and you work out, and you work hard, you will have a better day - 100% guaranteed.

Discipline starts every day when the first alarm clock goes off in the morning. I say 'first alarm clock' because I have three, as I was taught by one of the most feared and respected instructors in SEAL training: one electric, one battery powered, one windup.

If I went back to my 20-year-old self, what I would tell my 20-year-old self is, 'You don't know anything.' Because everyone, when they're young, they think they know what's going on in the world, and you don't.

Jocko Willink Quotes