The newly-single mum tells Women's Wear Daily, "There are a lot of people with much bigger problems and who are less fortunate. I try to keep it all in perspective."
She reveals that she now tries to do at least one thing every day without "being afraid to fail", saying: "Who cares? At least you tried. It's usually the people who haven't tried who are the naysayers."
Talking about daughter Suri's upcoming first day at school, Katie wouldn't reveal where the six-year-old has been enrolled. But she did paint a very different picture of the upbringing we all imagine for Suri.
The cameras may capture the helicopter rides and the trips to Disneyland, but at home Suri just does normal stuff like arts and crafts with her mum.
"I spray-paint shoe racks, because, why not?" Katie says.
"[Sometimes] I think, 'Oh, I'm a great mum' and then it doesn't really pan out the way I think it's going to. But the intention's there. I've always painted and done crafts at home. I have to stay creative in every aspect [of my life]. My sister teaches art, and she gives me a lot of ideas."