Its definitely possible. I decided on sunday to practice lucid dreaming. That night I dreamt I was working with light energies and transforming vibrations in a house full of people. I was conscious of dreaming but not really able to change the scene etc. Then last night I dreamt and woke in my dream. I decided to see what I could change and could turn lights on and off by blinking and got some pretty good psychedelic visuals. I feel like thats my trigger to know if I'm LDing, or my reality check, whatever you want to call it!
Oooh and I recommend moonstone as an aid for dreaming.
Go confidently in the direction of your dreams. Live the life you've imagined.