Proper use of your physical senses is critical, and vision is first and foremost. You must break this habit when you fly. Competent pilots glance at the wingtip occasionally in order to determine pitch attitude when flying and taxi speed when taxiing. And they look just to the side of the nose whenever the nose blocks the horizon during stalls, slow flight, and the landing flare. They continually monitor the relative movement between the cockpit window frames and the Earth's surface in order to control these six types of motion using flight control and throttle inputs.
Control feel is another important sense.
Light control pressures reflect slow airspeed. Firm control pressures reflect high airspeed. This critical input alerts you to airspeed that may be incorrect for the task at hand, regardless of indicated airspeed. Hearing is next. Airflow noise and engine noise in particular tell you a great deal about what the airplane and engine are doing.