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Both books are set (primarily) in the years following World War I. They follow, respectively, the lives of a shell-shocked veteran whose loss of memory creates a mysterious gap of three years in his life and a humble, modestly skilled schoolmaster whose long career in the same boy’s school brings him many small triumphs. Both fellows I think you’ll find endearing and the lessons they have to teach you’ll find practical, winsome and memorable.
And the surprise ending of RH will knock you out.
Both Random Harvest and Goodbye, Mr. Chips easily rate my 5-star recommendation.
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By all means, if you like old movies, please consider these as excellent choices. However, do not expect the movies to follow the plots of the novels!
Read the books first. Let them settle into your psyche. And then, after two or three months maybe, go watch the films. Like bourbon and egg nog, each may be superb on its own but combining them is a disaster that ruins both.