Leadership is perhaps the most important concept Marines are taught during training. As with most things we learn, concepts are easily remembered with acronyms. JJDIDTIEBUCKLE (pronounced “JJ did tie buckle”), representing justice, judgement, dependability, integrity, decisiveness, tact, initiative, endurance, bearing, unselfishness, courage, knowledge, loyalty, and enthusiasm.
Benjamin Franklin nailed it when he said, "Fatigue is the best pillow." True story, Benny. There's nothing like pushing your body so far past exhaustion that you'd willingly, even longingly, take a nap on a concrete slab.