Is it real or is it Memorex?

After reading Vicente's chapter on team work and the section about the anaesthesiologist who was physically and emotionally spent after working on the practice dummy it made me realise how much we invest in practice and experience. This prototype is my practice dummy. I find myself worrying about the realities of our LMS, whether or not students will actually use it or if our product will actually be successful. I find myself getting excited when things go well or when new ideas arise that will really advance our prototype and getting anxious when things don't.
Then I have to remind myself when I am physically and mentally spent after a demanding session or another early morning wake up that this is just a prototype.
That being said, I also know that the process of developing this prototype must be as "real" as possible with all of the investments, both emotional and spiritual, for it to have long standing, reflective benefit.