Latin for Easy going, relaxed, open-minded

I am looking for a Latin word (or short phrase) that expresses the notion of being easy-going, not getting bogged down in small details, not taking life too seriously, being open-minded and flexible, etc. Words like "carefree" or "lighthearted", but without the negative connotation of being lazy and/or irresponsible. Does anyone have suggestions? Much appreciated!