When director Tom Shadyac appeared on Oprah's Lifeclass, viewer Kathleen had a question inspired by her wireless provider: Why does she only get results when she's persistent with customer service? Find out why Oprah and Tom say being assertive isn't a negative way to live. Watch the video now!

I Am premieres on "Super Soul Sunday" tomorrow morning! Tune in at 8 a.m. and noon ET/PT for this life-changing documentary.