1
general::
Be deeply moved or affected or upset by, as in I know you'll take these comments about your story to heart, or She really took that college rejection to heart. [c. 1300]
American Heritage Idioms
2
general::
Phrase(s): take something to heart
Fig. to consider that some comment is significant to oneself. • Mary listened to Bob’s advice and took it all to heart. • All Sue’s advice was taken to heart by the show committee.
McGrawhill's American Idioms And Phrasal Verbs