Sensual Desire & their gradual cessation

We all now that habits which are not acted upon wither with time. However, is it possible to reduce cravings to a point where the specific cravings are close to non-existent? How does one go about to achieve this? Let's take sexual desire or sensual desire as an example: If I don't engage in sexual activities then craving will probably reduce in intensity and frequency, but I doubt that external objects have no control in how I process them. If I see an attractive woman or tasty food isn't it inevitable that I at times will feel strong craving?