The word is euthenics. Pronounced /yoo-THEN-iks/. This word is a noun and is defined as
A science concerned with bettering the condition of human beings through the improvement of their environment.
Used in a sentence: The quest for spiritual harmony can only be accomplished with God’s guidance coupled with an immersion in Divine euthenics.
For years we have been told that in order to succeed, we have to be hungry, or have a hunger for the success that we desire to achieve.
In my maturity, I have found that that advice can be misleading because in many cases, the more hungry you are, the more likely you are to eat anything.
In other words, in life, be mindful of your appetites.
The energy wasted on not liking someone or something could be put into loving yourself.