Great book, I happen to own it
You can easily grow taller.
I would do affirmations a few times a day, something like," im so happy that im growing taller every day."
And don't be afraid to exercise your imagination. Albert Einstein said " The true sign of intelligence is the power of imagination" He himself did it a lot, and it was a key factor in his success in everything he did.
Imagine yourself taller, see yourself walking around as tall as you would like to be. Your subconscious can't tell the difference between things that are imagined and that you are seeing.
Your subconscious will take your affirmations and images in your mind and act on them. Be sure to take vitamins because your body will need them to grow your bones.
This is just how plants grow. The universe is an infinite intelligence, it grows plants and lifeforms effortlessly, it can easily make you taller. (As your subconscious is connected to the universe) You just need to concentrate on what you want, and have faith that you will grow, and you will