It takes me forever to finish anything!
what I do is write a list of things almost done, a list of things half done, a list of things that supplies have been bought for and a list of wishs and dreams. then stick it to the door where I HAVE TO SEE IT my goal is not to finish everything, that seems daunting! but only to not let one list get to much longer than the rest.
AND then I dont forget about things that get stuffed in the back because I dont want to THINK about that one frustrating piece, and its very nice to cross something off the list :)