United Kingdom, March 1 -- Chris Pratt's humour allows his family to tackle hardships.

The 46-year-old actor's wife, author Katherine Schwarzenegger, is fortunate to have a spouse with an abundance of hope and happiness.

She told People: "For a variety of reasons, I'm grateful that I married Chris. But one of them ... [is] being able to have someone who brings humour in challenging times.

"Even when not funny, someone who can also make you laugh in a really hard time is really important.

"He definitely does that, so I'm really grateful for that."

Katherine, 36, and Chris have daughters Lyla, five, and Eloise, three, as well as a two-year-old son named Ford.

And Chris kept everyone entertained when their household was struck down wit...