Assume the Worst
When under attack, assume your assailant means either to end your life (and the lives of those around you) or cause you (and those around you) great harm. Assume he's heavily armed with multiple weapons (knives, a gun, fists, feet, knees, etc.), and assume, too, he intends to use them all if necessary.
When engaging with such a one (if you have to), don't go for his weapons. Go instead after his mind. Attack ruthlessly a vulnerable target (or multiple vulnerable targets). This will disrupt his "diseased" plans and short-circuit his cognitive abilities to regroup and improvise. This is all about being present, paying attention to what's happening in the moment, and not fixating on any one thing (like, say, his left-handed grab to your throat while he, unbeknownst to you, thrusts a knife into your side).
Again…assume your assailant means to cause you great bodily harm; and assume, too, (1) he’s well-armed, (2) he intends to use what he has (Why else, then, would he have brought such items with him if not to aid him in getting from you what he wants?), and (3) he’s lethally experienced in their use.
Train to face just such an assailant; this will keep you from going through the motions in your training. Someday, it just might save your life or the life of someone you care about.
CU on the mat...
The more though sweatest in training, the less thou bleedest in battle.—Dick Marcinko, Former U.S. Navy SEAL
IKIGAI Weekly Blog Schedule (per The Training Trinity):
Mondays: Meditative Prayer
Wednesdays: Holistic Discipline
Fridays: Martial Arts Practice