I decided to read Kamleshwar's Hindi novel Aagami Ateet (roughly translated as The Upcoming Past) because one of my all time favourite movies, Mausam, is based on it.
The movie is fabulous with great performances by Sanjeev Kumar and Sharmila Tagore, and Gulzar's direction is, as always, perfection itself. I wasn't sure how the novel would hold up in comparison to the film (something which generally I think in terms of the other way round), but I have to say that the novel holds up on its own in a pretty solid manner. This is a story that hasn't ages and remains relatable even today. Perhaps even more so in our present world. The story of a man who comes back in hope of making up for the mistakes of his past, to give himself a semblance of peace but has to go away empty handed elevated the oft used romance plot of a man who loves and leaves a woman.
Unfortunately, there seems to be no translation available but if you can read Hindi, definitely recommended. There are certain differences in the book and the film and they both are worth reading and watching in their own right.