Don't let "reality" rule your dreams
I've been working my way slowly through Curt's excellent e-book on Occupational Adventure, particularly in creating a passion core - and the techniques in that are what he talks about here:
Too often people try to create a picture of what they really want and at the same time start factoring "reality" into the picture. I always tell them, "We're not looking at reality yet. Let's create a picture of what the best of all possible worlds would look like for you first."
Reality does come into the picture, but not in the exploration stage. When you let what's realistic define your dreams, you limit yourself severely. It creates false boundaries beyond which you won't even try to venture, because you don't believe you can.
What is possible will keep expanding, if you let it. Allow yourself to get the big dream picture, and then figure out how much of that is feasible right here, right now (i.e., what is realistic). Then look at how much of that is feasible next week, or next year.
I had two dreams within my list - one a boyhood dream of being a train driver and the second to be a TimeLord (keeping with the Dr Who theme). Now I ruled out the train driver becuase it didn't fit with my passion core (the things I love doing) however being a timelord did! Now it doesn't mean that I can suddenly have a time machine and have two hearts etc and yet it does mean I can try and make the world a better place. I haven't gotten too far with it yet :) however its simply a matter of time. To quote Rose from the parting of the ways - "he [the Doctor] showed me a better way of life". So what I am saying is its good to do a little dreaming - it helps us be creative without fear of falling into reality. And you can change reality.