Welcome to the forum, I have met Andy a few times now and he is a very helpful chap
Set yourself a goal to get the car done.
not a goal to get it done by XX/XX/XX , just a goal to get it done... It can take 6 months, 16, 26.... Whatever.
Then just work on it when you can, that way you wont feel you slipping behind and get disheartened.
And if you get stuck somewhere, take a break or move on and come back at a later date with a fresh mind.
TT