One's attitude or mindset; a habitual care, attention, or intention toward how one acts or behaves.
毎日の健康管理は小さな心がけの積み重ねだ。
Daily health care is the accumulation of small conscious efforts.
礼儀正しくすることを心がけている。
I try to be polite (I keep being polite in mind).
災害時に備える心がけが必要だ。
It's necessary to keep preparedness for disasters in mind.