Though I was skeptical at first, I did the exercises, I wrote the morning pages she recommended, I emptied my thoughts, took the courage to write down painful, difficult memories and thoughts etc. and I suddenly started to feel joy in spontaneous, imperfect drawing. I no longer resist trying new techniques and mediums, I don't postpone it as much, I don't aim for perfection on the first try any longer, I don't care about "wasting time" on art like I used to think.
The synchronicity she was talking about really occured. Strange things happened - I found dreams, desires, urges I didn't know I have... for example, I started to dream of practicing playing a regular guitar (though my fav is an electric guitar. I also like cello, violin, piano, flute and the like) and the urge to play is so strong I might even get myself a used one.
Time will tell if I also overcome my habit of not finishing my works. But I think that now I don't care whether it's perfectly perfect or not, I might as well do it and have fun while doing it. I no longer care about external rewards like popularity or pageviews or fame or whatever. And I thought external rewards irreversibly destroyed my ability to enjoy the process of drawing.
I highly recommend reading this book. It didn't shoot the author into fame without a reason. The book is really, really good. You just have to trust that some of the strange things she suggests doing come from her years and years of experience.
If you liked the book, please make sure as many people will find out about it as possible.