@Pace - phrased slightly differently...
Choose where you're going to land and commit to it. Unless you discover at the last minute that the chosen landing area is completely unusable then stick with it anyway. Keep the airplane(glider) under control all the way down to the ground and until you stop. Realising that the field isn't as good as you first thought (power lines on the approach, not quite into wind, animals in the corner of the field, crop higher than expected, etc) is manageable providing you spot these additional problems and deal with them. Changing your mind at the last minute, trying to make it into a 'better looking' field when very low just leads to an accident.
"don't change your mind unless you really need to. Why would you want to unless you really needed to?".....Quite often when people are under pressure their decison making abilities go to rats and they'll start changing their mind rather than calmly assessing the situation and electing to stick with the original plan.