My exersize this weak
Pay attention to how you automatically pick up your phone.
Every time you feel the urge to grab it, pause for three seconds, focus your full attention on your body, and then pick it up with full awareness of the weight and texture.
To extend this exercise, do exactly the same with your house keys. Before your hand touches the cold metal, force yourself to wake up from your routine sleep and feel the physical act of turning the key.