take something to heart
lose heart
break one’s heart
learn something by heart
wear one’s heart on one’s sleeve
have one’s heart set on
follow one’s heart
get to the heart of the matter
have a heart-to-heart talk
have a change of heart
to memorize
to change one’s mind
to let others see your emotions
to hurt or make someone feel very sad
to be deeply affected or hurt by something
to want something very much
to discuss something openly and honestly
to discuss the main issue
to become discouraged
to do what one feels is right