Though I forgot most of it due to 'dream evaporation' upon waking, the interesting slice is still mostly intact.
I was in some huge foggy field, doing something with a bunch of people I apparently knew. I don't even remember what, but at some point I gained a little lucidity, and did the only sane thing I could with it : Run, jump, and begin flying at a low angle. I was gaining in speed, and gradually increasing in height, as I shot out from the huge park enclosure and over buildings. It's a great feeling, being able to fly, while being just lucid enough that the dream is intensely vivid. The buildings got bigger, the further I flew. My speed was starting to get pretty intense, and as the houses became apartments, and then skyscrapers, I realised I wasn't very good at turning, and couldn't slow down. Suddenly I was playing a Starfox-like building evasion game, struggling against a very slight turning ability, which ended with me hitting the side of a building rather high up. I clung onto a protruding air-conditioning vent, and yelled inside to an office to get help before I fell. My grip was slipping, and just as I started to fall, someone grabbed my hand through a crack in the window...
...and then I snapped awake (a false awakening), I was inside the building, and had fallen off a chair, and was caught by an orderly before I completely faceplanted on the ground. I was actually a patient in a mental hospital, who thought he was a flying superhero. My dream and impending false-fall had snapped me awake. During a review to ensure I had recovered properly, I began to expound upon the virtues of truth, but also monologue about how I didn't actually regret my time within my own head, because it meant I could live a dream, and that happiness was the only true measure of success in life. My voice was a soothing, insightful drawl, and my insights were smooth and folley-like. The viewpoint detached from my dream-self, and panned out to reveal that...
...I was actually played by Morgan Freeman.