Three quarter of what you eat keeps your doctor alive- African proverb.
Food of mind is thought. Food of ego is power. Food of greed is money.
One quarter means the lesser the better, three quarter for doctor means working for others by loosing opportunity of enjoying human life by living simple life, enjoying your work as that will lead you to your inner beauty, kingdom of God.
Saint Kabir,India, said that path to be born as human being since beginning is very zig-zag till human being- like an ant moving in search of food from one corner of a room to another (means already we have travelled too much length to cover small distance because of lack of consciousness. Now only one quarter of a mile’s (cm in case of ant example) straight path is left but illusion of this world is so strong that no one can escape from it, if not taken proper precaution while eating, earning, living etc.
So three quarter of mile is already covered after taking birth as a human being and you have enjoyed all these already and now do not get indulged in it again. Focus on remaining one fourth by eating everything one fourth, as only at beginning point this illusion can be controlled.