Awareness to the whole body is easy when you are relaxed and at ease so to learn to stay relaxed mentally and to move as a whole have a friend grab/hit/choke you with one hand and stab you with the other. It is good to do this against a wall as well to see how you move with no back and coming to stab you from behind and the idea is to say aware and move using the entire body and not just the area close to the strike/slap to the face/kick and so on. This idea can be adapted to anything you do from rolling to breathing and remember to not tense against the knife and to use your entire body: feet, hips. torso, shoulders arms and neck to find a way to survive and to keep your attention more on your survival than on winning a match or showing how brilliantly you move. Find the simplest shortest solution and try to simply walk out of it.