"less is more" is a neutral words. its' meaning largely depend on the surroundings. in certain condition it is undoubtedly correct, but in another condition it isn't probably correct..
for example. if one want to loss weight, eating less probably means more reward, because eating less probably help him or her to loss weight.....in addtion, one, who has less desire, probably own more peace in his or her mind... just like the ancient saying: no desire will make one become as stronge as steel...
under other condtion, less is less, more is moe.. for example. one want to improve himself, if he or she pays less endeavour, obviously he or she don't make more rewarding.
"less is more " should be regarded as the attitude to life in reality....after all, trouble is more, however happyness is less. if the trouble is less, we will have more happyness...