When your project is finished, the dream is dead and the reality is born. The death of a dream is like the death of a friend. It's probably been with you for a long time -- longer even than the length of the project. A dream is the manifestation of what's possible. When it is over, the possible diminishes very quickly and you are left with what actually is. Will people respond well to your project -- in the dream sta…
There's a scary cliff there, but I feel like launching is when a project first becomes real. It's the actual start. It's when you're judged. It's usually when you learn that your assumptions were completely wrong. It means you have to start dealing with actual problems, not imagined problems.
That's usually less fun, but I think it is more exciting (in large part because it's the dive into the unknown).