peace of mind

: a state of tranquility or quiet: such as

: freedom from civil disturbance

: a state of security or order within a community provided for by law or custom

: to be, become, or keep silent or quiet

: recollection, memory

: the element or complex (see ¹complex 1) of elements in an individual that feels, perceives, thinks, wills, and especially reasons

: the conscious mental events and capabilities in an organism

: remind

: remember

: to attend to closely