The same here,,I have been rebuilding my wifes 55 Customline for several years,ripped into it real hard to start with,body off the frame,repaired the frame,replaced the rear quarters,patched the floor,rebuilt the doors,etc,then had to turn my attention to the house,then the business,then the house,then rebuild the F100 we imported,oops,need a motor,take the windsor out of the Customline,buy an injected motor for the Customline,,,oops,no cash,SOOO,Itry to do something as often as I can at the moment,but we are very busy in the shop,so it hasnt happened for a month or so.I think its normal to have the car builders blues,plus,I am too stubborn to give up..
Stick with it,dont go near it for a week or two,then sneak up on it and frighten the daylights out of it..