When a project only gets bigger and bigger

My project escalated into a major project once I had broken the car down into pieces. I found myself jumping around alot. If you are not going to put the car back together until everything is done, there is no real order you have to follow. I would pick something and work on it until an obvious stopping point and then focus on something else. I worked on my motor till it was mostly reassembled on the stand. Then I focused on the dash (disassembly, repair, wiring, reassembly). Then I worked on seats, and so on. In between each of these things, I would focus on some body work. Maybe strip and prep a fender, or something like that. I would say installing the carpet and seats is one of the last things you should do.