Just because you feel good doesn't make you right

he·don·ism    
noun
1. the doctrine that pleasure or happiness is the highest good.
2. devotion to pleasure as a way of life: The later Roman emperors were notorious for their hedonism. Origin: 1855–60; < Greek hēdon ( ḗ ) pleasure + -ism
Synonyms 2. sensualism, libertinism, debauchery, dissipation, carousal.