As many know I got dis-heartned several times, but then I'm a fussy git and had to do it right which took even longer govened by funds mainly, and then time.
I did what Simon suggested made a list of everything which needed doing, this can make it look worse at first !, but ticking them off make it look better, did a little bit every night quick and easy jobs and the bigger jobs over the weekend. and I did have to force myself to get and do it, but the end was worth it.
Years ago I would have spent every minuite I could trying to get it built, but this one I made it secondary to life in general.