I can also agree that racing an "oddball" can be very hard at times. See my burnout thread.

For me I just needed some time away from the Opel. After it melted the engine I dusted off the MR2. Just last week I got wind in my sails to start fooling around with the car again. Just take a rest from it and the same reasons you decided to build it in the first place will all come back to you.