Daydreaming is a nightmare. As long as you have a happy day, then it is natural to think of happy things when dreaming, and you can think of happy things when getting ready to go to bed, and that will also induce things that happen when dreaming. Of course, if you go further, it is the so-called lucid dream construction.
During the day, think a little bit more about what you want to happen, or more exercise, after their own labor, it will be easy to dream at night, as for whether it can be a beautiful dream is hard to say.
Like fantasy, so often dream, such as before going to bed to think of some favorite movies and television stories or some favorite people, happy things, etc., sleep has been thinking about, dreaming about some good things, such as liking some of the actors a la, before going to bed in the head to think about, and often can dream, day and night, and I often put the reality of things can not be done to accomplish in the dream, but also to do the work of the people, the people, the people, the people, the people, the people, the people, the people, the people, the people, the people, the people, the people, the people, the people, the people. Moreover, I often put the things that I can't do in reality in my dreams, so I often have beautiful dreams. However, I don't know if my method is applicable to others. Almost all of my dreams are beautiful dreams, perhaps the subconscious mind to avoid not good so, in the dream to satisfy themselves to deceive themselves.