There's lots of things out there for inspiration that might be what you're looking for:
The journals of Dan Eldon--not only are they visually beautiful and multi-layered, but they tell a powerful story of this man's life. www.daneldon.org
Any book of Sabrina Ward Harrison's is good for ideas; the first book is a good example of how keeping a journal like this comes out in what is written and what is made into art. She has 3 books so far. www.sabrinawardharrison.com
"Making and Keeping Creative Journals" by Suzanne Tourtillott
Not only is this book an excellent resource for making your own journals, it is so amazing just to look at the work of several different " journal artists".
There's tons and tons of stuff on the web, if you search for journal-related words, ie "book arts", "journals/journaling", "artists' books", "illuminated pages". Good luck!