Adaptability and Flow are two of the most important psychological attributes of a warrior. To be truly adaptable we need to have no preferences. And how do we have no preferences? Accept everything that comes your way.
If someone is verbally assailing you, stay in the moment and don’t prefer to be any where else. Don’t take anything he says personally. If he kicks you, he kicks you, don’t be for or against it. Go with it, flow with it and do what you need to do to be safe. If he punches you relax, go with it. Move in an appropriate way where you can counter strike from a position of power. If he shoots in for a take down stay calm, accept it and counter it with equanimity. If the fight goes to the ground embrace it, go with it not just with your body but in your mind as well. Allow your mind to be like a mirror reflecting everything, yet untouched by anything.
For the Warrior, the key to adaptability is having no preferences. Accept everything and survive anything.