I should like to add to Dick's comments, that I personally think that driving well does not necessarily mean slowly. I believe that apart from the obvious unnecessary 'driving on the clutch', that its how fast you release it that mostly does the damage by ripping away at the lining. Progressive release of the clutch including between 2nd & 3rd gears to avoid 'jumping', and even when coming down thru them, I believe actually preserves the lining and 'polishes' the flywheel. Anyway, I have never worn thru clutches, its normally oil seals and dodgy release bearings that have led to the downfall of mine...