When you go to bed, do you think about your day or are you doing something more meditative to relax your mind?
Have you tried asking your guides for help in getting the dream you want?
When my life was in turmoil that's when I had most of my astral experiences. Now that I am grounded in my reality a little better, I don't have as many experiences, but I never lost the lucid dreaming. I can still do that many times per week.
what I like to do now, though, is program a dream but not be lucid so I get to feel the excitement, thrill, and danger of believing in the dream that I am not safe.
Total immersion into the role as it were.