Park it in your garage, box up all the parts and start piling everything on top of it.. in about 6 months, you wont even see it sitting there... 6 more months, you will wonder what is under that pile of junk.... after spending a weekend digging it out, you will be re-energized and you will make a bunch of progress until you get depressed about it again.... just dont park it outside where it will degrade more.
Or you could just put it back together, paint it flat black and drive it for a while, then restart the re-storation.
If you decide you dont want it, give it away in the free trucks forum.