Self-love, defined as "love of self" or "regard for one's own happiness or advantage",[1] has been conceptualized both as a basic human necessity[2] and as a moral flaw, akin to vanity and selfishness,[3] synonymous with amour-propre, conceitedness, egotism, narcissism, et al. However, throughout the 20th and 21st centuries self-love has adopted a more positive connotation through pride parades, Self-Respect Movement, self-love protests, the hippie era, the modern feminist movement (3rd & 4th wave), as well as the increase in mental health awareness that promotes self-love as intrinsic to self-help and support groups working to prevent substance abuse and suicide.