A project can be euphoric and gut wrenching at the same time.  You need to be able to handle both.  I had several sleepless nights after the launch just worrying about getting everyone’s product to them by Christmas.  Also, there will always be that comment someone posts about one of your updates that really brings you down and makes you feel like all your backers secretly hate you, but you have to manage that nervousness in your stomach and the anxiety of performing for the world in a very public way.  If you don’t think you can handle the heat without going postal, then you should probably stay out of the Kickstarter kitchen.