I'm in the middle of the Sufferfest Advanced Road Training Plan. It's the best thing I've found to do self-coached.
I had a coach for about a year but it was very impersonal. I probably wasn't the best trainee, but getting an email once a week wasn't very motivating.
The Sufferfest plan is cheap. Of course you have to buy some videos if you want to follow the plan, but even then the overall cost isn't bad.