Getting control over your dreams, i.e. lucid dreaming is something one can learn. There are many techniques. Just google "how to lucid dream" or something like that. One of the most useful techniques (and something that I also find useful in general) is to write a dream journal every morning. At the beginning most people have a hard time remembering anything from their dreams but just be patient and keep the journaling up and eventually you will be able to remember an incredible amount of details every morning. You can use the material to learn lucid dreaming or to analyze your own unconciousness. Keeping a dream journal is a very worthwile habit. Have a nice day guys! :-)