For this reason, they must believe in the cause for which they are fighting. - Jocko Willink

Once I analyzed the mission and understood for myself that critical piece of information, I could then believe in the mission. If I didn’t believe in it, there was no way I could possibly convince the SEALs in my task unit to believe in it. If I expressed doubts or openly questioned the wisdom of this plan in front of the troops, their derision toward the mission would increase exponentially. They would never believe in it. As a result, they would never commit to it, and it would fail. But once I understood and believed, I then passed that understanding and belief on, clearly and succinctly, to my troops so that they believed in it themselves. When they understood why, they would commit to the mission, persevere through the inevitable challenges in store, and accomplish the task set before us.

Waiting for the 100 percent right and certain solution leads to delay, indecision, and an inability to execute.

The moment the alarm goes off is the first test; it sets the tone for the rest of the day. The test is not a complex one: when the alarm goes off, do you get up out of bed, or do you lie there in comfort and fall back to sleep? If you have the discipline to get out of bed, you win — you pass the test.