As a reader's advisor, I find reading plans extremely helpful to keep me reading widely and to see trends as they emerge. I never want to get over my love of reading and sticking to assigned (even if I assigned it myself) reading can be deleterious to the enjoyment of books.
For every book I read in my reading plan, I probably read ten or so books that have caught my fancy. I don't finish every book I start. If it doesn't grab me in the first 40 pages, it is history.
Sometimes I go on book binges. Right now I'm on a romance binge having just read Homecoming Ranch by Julia London and The Arrangement by Mary Balogh. I have the new Mary Jo Putney book, Sometimes a Rogue, next in my queue and will be giving away a copy of it to some lucky Genrefluent.com reader. The next one in line is Diane Gaston's A Reputation for Notoriety.