The 1994 Frank Darabont film The Shawshank Redemption may be everyone's favorite movie to catch on TNT on a rainy Saturday, but it's not an obvious place to go looking for money lessons. This quiet film is a meditation on the power of hope to change lives—which hardly seems like a message one can expect from financial professionals (ahem).

Yet, the story of Andy Dufresne's time in (and spectacular escape from) the Shawshank State Prison provides a blueprint for smart financial choices. And the story of how the film itself gained traction despite a lackluster initial reception can also teach us important money lessons.

What we see: a rock hammer and weekly correspondence

Following his wrongful conviction for murder, Andy Dufresne arrives at Shawshank to serve two consecutive life sentences. He befriends another lifer, Red, who runs an illicit smuggling business. Andy asks him to procure a rock hammer and a large Rita Hayworth poster. (The movie, of course, springs from the 1982 Stephen King novella, Rita Hayworth and Shawshank Redemption.) Andy claims that he wants the rock hammer for carving, and he does indeed create small sculptures with it.

But that's not all he uses it for. By the end of the film, we learn that Andy has spent 19 years digging a tunnel through his wall with the hammer, using the poster to cover up his work. Despite the rock hammer being a tiny tool for work of that magnitude, Andy never gives up his slow, diligent, and methodical approach to escaping.

Andy is equally methodical in his efforts to improve the decrepit prison library. He sends weekly requests to the Maine state legislature for funds to buy used books. After years of relentless effort, Andy secures a $500 annual appropriation for the prison library, granted by the state "just to shut him up."

What we learn: be methodical with whatever tools you have

Part of what makes Andy Dufresne extraordinary is his ability to take the long view. Most of his fellow inmates lose themselves in dreary thinking about their imprisonment, but Andy sees an investment opportunity. He recognizes time as a tool. He doesn't have freedom in Shawshank, but he can take advantage of time in a way people on the outside can't.