Abstinence

[ab-stern-nence]

noun
1: voluntary forbearance especially from indulgence of an appetite or craving or from eating some foods

2 a: habitual abstaining from intoxicating beverages b: abstention from sexual intercourse

Insouciant

[in-su-ci-en]

–adjective
free from concern, worry, or anxiety; carefree; nonchalant.