Change of heart

(PW) a change in the way one feels about something

I wasn’t planning to spend the holidays with my family, but after speaking with my mother, I had a change of heart.

(free) n. pl. changes of heart

A reversal of one's opinion, attitude, or feelings.

(dictionary) noun

a reversal of one's feelings, intentions, opinions, etc.: At first Mother said we couldn't go, but she had a change of heart and let us.

Origin:
1820–30

(your) change of heart

a change of mind, affections, loyalties, etc.