If you do not believe you are disciplined, it is because you have not decided to become disciplined. Yet. - Jocko Willink

But we can’t ever think we are too good to fail or that our enemies are not capable, deadly, and eager to exploit our weaknesses. We must never get complacent. This is where controlling the ego is most important.

Live in defiance of the weakness and in rebellion against the decay.

Although discipline demands control and asceticism, it actually results in freedom. When you have the discipline to get up early, you are rewarded with more free time.