Movies like The Secret Life of Walter Mitty

If you want that specific blend of an ordinary person forced from comfortable daydreaming into actual consequence, you'd probably get closest with The Lost City, which matches the tone of wry self-doubt-meets-adventure and has a similarly reluctant protagonist discovering that real stakes beat imagination. The Magic of Belle Isle might also work if you're drawn more to the quieter theme of isolation-to-connection and rediscovering wonder through genuine human engagement rather than external action. Beyond those two, the other picks either lean too heavily on surrealism (Inception), veer into documentary territory, or lack the specific comedic-yet-sincere balance that makes Walter Mitty's transformation feel earned rather than imposed.