What worked for me has been mentioned by others. It took my 14 years to "finish" my truck, but I drove it a great deal of that time. Fixed the brakes first so it would stop. Then I worked on the drive line so it would go faster and the suspension so it would ride better. The whole time I was driving it on and off, just to keep me motivated. Then one day I decided it was time to finish it, no matter what it took. That took almost two years, but the truck went from
this to
this over those fourteen years. Here's
a picture of it at about six years (yes, it actually snowed in Dallas.) You'll notice there's no bed. It was drivable and licensed, insured and inspected.