This week on “Sunday Morning” (Oct. 4)
The Emmy Award-winning “CBS News Sunday Morning” is broadcast on CBS Sundays beginning at 9:00 a.m. ET. “Sunday Morning” also streams on the CBS News app beginning at 11:00 a.m. ET. (Download it here.) Hosted by Jane Pauley COVER STORY: Letting go: Why holding onto grudges can be damagingStudies have shown that people who hold…