This is an awesome business idea and I got the idea from a similar service called Mygoals.com.
Everybody has goals they want to achieve but sometimes they don't know exactly how to get there or they lose their motivation quickly. I know I do sometimes, everyone does.
The business idea here is to sell people access to a membership that shows them exactly how to achieve their goals and then gives them the motivation to do it. Let's say someone wanted to write a novel, but didn't really know how to get started and they also know they would lose motivation along the way, this is what I would do.
I would give them a complete day by day checklist of things they had to do that day and have completed by that night and so on, until you had a whole week of checklists for them to use for everyday of the week.
People want things done for them and while you can't write their novel for them, you can practically hold them by the hand and tell them what needed to be done to get to their goals.
There are a million and one ideas you could do with this one, I just mentioned one idea.