With VILD, the general principle is to visualize yourself becoming lucid in a specific location, typically a "Dream Room". You can visualize yourself in the Dream Room with some friends who tell you it's a dream, or you can simply visualize yourself in the Dream Room becoming lucid and exclaiming "It's a dream!"
Because dreams are mostly generated from visual memories, VILD can be greatly improved by using photographs of a room you hardly ever go to. What I did was take about 50 photographs of a room full of interesting objects in a friend's house that I visit about once a year. In addition to photographing the room from all angles, I took lots of close-ups of the interesting objects showing the fine details.
You can run the photos as a slide show on your computer before going to bed; put a photo on your computer as wallpaper; put photos in your car and at different locations in your house such as the bathroom mirror or a bulletin board in your bedroom or office, and so on. Every time you see a photo, visualize yourself becoming lucid in the Dream Room and what you want to do when you get there. During the course of the day, think about the Dream Room as much as possible. The goal is to create a controlled obsession about the Dream Room so that it becomes your "default" way of thinking when you are not dealing with the problems of life.
If you don't have access to a room like my friend's, take photographs of a room in an art gallery or museum. You can use this technique with DILDs or WILDs. As you persevere with the visualization, you will find yourself thinking about the Dream Room more and more often until you dream about it -- and become lucid.
