As difficult as it can be to accept it, it's never too late to go around, even if you've touched down (although deciding to 'go around' when you're down to 50kts may not be such a good idea!)
If you feel the lift start to drop off, do NOT close the thrust levers, even if it's yelling retard. Keeping the thrust on (be it in SPEED or Manual), even until you touch down, can turn a heavy landing into just an uncomfortable landing.
Phase Advance is a great tool on the approach but remember that it doesn't work below 100ft RA.
Listen to others, learn from it and move on. Don't dwell on it and let it get you down!