This is definitely worth restating. If your vision is fixed on the runway immediately in front of the nose, a modest descent rate can look alarming and lead to too much flare. That, in turn, can cause all sorts of problems (pilot-induced-oscillations, loss of airspeed, stall, hard landing, bounce).
Looking toward the far end of the runway, your perception of descent rate is somewhat muted by peripheral vision, so this tendency is reduced. The goal is to rely on the subtle cues from your periphery, and develop that "seat-of-the-pants" feeling that you've heard so much about.
Keep working on it; it'll come! Don't be afraid to ask for one lesson with another instructor if you feel you've reached a road-block. Sometimes simply hearing something explained, or seeing it demonstrated, another way makes all the difference.
Eric