..with a difference.
If you have to structure your own time as I do (as a self employed artist) you may find Donald Miller's Storyline schedule interesting. It is a sheet which you fill in each day - available free from http://storylineblog.com and scroll down the sidebar to Productivity Schedule download.
I've been using it for just a few days and it has been really useful. It helps me focus on what is important to me, it helps me make time for enjoyable things every day (though I do enjoy the work I do!), and it helps me manage my mental energy.
There is a 'mind trick' devised by the psychologist Victor Frankl which I find works remarkably well for me....
Do you think it might work for you?