Alan,
I think the problem is people tend to think in terms of time in large chunks. As in I don't have the 8 hours of time the box says it will take to assemble this plane. Instead build in 15 or 30 minute intervals and before you know it the plane is done. This is the same for kits when people say they don't have the time. Make some. Use 5 minute periods if needed. Get a work area keep it organized and you will be amazed at how much can be accomplished. I find it very relaxing - after all you are under no time frame other than what you've imposed upon yourself.
John