The book itself is designed to form an actual block - it's a cube, each side about 8cm. Though this doesn't make it especially easy to turn the pages, it does mean each concept or thought it asks you to consider is on its own on a page, which makes it easily digestible. It's not designed to be read cover to cover, rather to be opened at random. Each page has an idea or thought or method you can use to help free yourself from creative stagnation. Often this can involve stepping away from your actual sticking point and thinking of other things; greasing your mental cogs to allow the whole machine to run more efficiently. There are also short pieces of advice from professional creatives such as authors or designers, and how they deal with creative block. It is very American and at times a little cheesy in its phrasing but the techniques are still helpful.
Examples: 'make an ice cream sundae with at least one ingredient you don't usually use'
'talk to the oldest person you know. get their story'
'itemise the contents of your purse or bag'
'start a scrapbook of images that inspire you. when you are feeling stuck, consult it'
'go for a bike ride'
'go to the supermarket and buy three types of food you've never tried before. taste them'
'spend an hour in a garden or greenhouse and write down what you can smell, see, hear and touch'