How to stay motivated on your project?

I'm having a heck of a time staying motivated on my big bolt pattern conversion/suspension rebuild. I've got a lot of the big stuff done, but there has been a lot of small setbacks that have killed my motivation, plus I went on vacation and that got me into a lazy state of mind. I'm trying to get back to it because I really want to drive my car, but I'm having a heck of a time getting back into it.

Anybody have any tricks that you use to get/stay motivated?