It all starts with a vision. You put a lot of effort into translating your concept to your customer. Endless hours of creating a mere vision, a realistic, yet quite unreal concept of your idea. But just like in any filed of operation, an idea is useless without its proper realization.
A good concept is fun and exiting but it takes true passion and commitment to finish the job right to the end, and a lot of effort.
Then you go real… and exited.