in⋅sou⋅ci⋅ant [in-soo-see-uh
nt; Fr. an-soo-syahn] –adjective
free from concern, worry, or anxiety; carefree; nonchalant.
Origin:
1820–30; < F, equiv. to in- in- 3 + souciant prp. of soucier to worry < VL *sollicītāre, for L sollicitāre to disturb; see solicitous 

Related forms:
in⋅sou⋅ci⋅ant⋅ly, adverb
Synonyms:
lighthearted, debonair, jaunty, breezy.
lighthearted, debonair, jaunty, breezy.
So in other terms .... may you have a insouciant day!!!
DON'T WORRY, BE HAPPY!!

