DH - as Cornish Jack says, the key to hovering is being able to make very small movements (finger pressure) with the cyclic - the enabler for this is a good seating position so that your forearm rests on your right thigh and is relaxed, this allows wrist and finger movements to control the cyclic. If your arm is off your leg then you are far more likely to overcontrol as you are moving your whole arm.
The other critical factor is understanding how very small attitude changes have instant results in moving the helicopter - once you recognise the hover attitude (helicopters hover one skid/wheel low in most conditions) and can reselect it when it has changed, you are most of the way to good hovering.