One possible cause is simply that there's insufficient clutch fluid in the system. (Although, if that is the cause, it might then be necessary to investigate further, to find out if there's a leak in a cylinder).
Otherwise it might just involve an easy minor adjustment, as here:
http://acurazine.com/forums/1g-tsx-problems-fixes-128/solved-clutch-pedal-low-engagement-point-837892/
Note though that the writer of that piece was originally quoted US$2000 to fit a new clutch by a mechanic who couldn't see the easy solution. (I've also paid for a new clutch, which a garage said was essential, only later to find out that the cause of my car's problem was something else completely, which could have been fixed with just 5 minutes labour and no new parts!).
So don't automatically believe anyone who tells you that the clutch needs replacing. (If it's not slipping, it almost certainly doesn't!)