Self-love, defined as "love of self" or "regard for one's own happiness or advantage", has been conceptualized both as a basic human necessity and as a moral flaw, akin to vanity and selfishness, 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, 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.