TCU’s Gary Patterson has a new life motto, courtesy of Toby Keith and Clint Eastwood

Don’t let the old man in.

That’s TCU coach Gary Patterson’s new motto.

“So I’m now 35,” Patterson said, chuckling at his signing day news conference on Wednesday.

Patterson, who turns 59 next week, has the new outlook after a conversation he had with country star Toby Keith about Hollywood legend Clint Eastwood and his latest film, “The Mule.”

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Keith spent a few days with Eastwood, and had a simple question -- how does Eastwood keep going and working from 5:30 a.