After hitting on a brilliant new life plan, our first instinct is to tell someone, but Derek Sivers says it's better to keep goals secret. He presents research stretching as far back as the 1920's to show why people who talk about their ambitions may be less likely to achieve them.
You'd be surprised by the number of people who want to write a book. In my experience, it's most people. Of course, talking about writing a book and actually writing a book are two very different things.
I refused to call myself a writer for the longest time. After all, I write stupid teenage love stories—that's not a legitimate craft, that's not literature. I had all kinds of voices arguing in my head, telling me that I didn't deserve to associate myself with actual authors. But that whole time I spent beating myself up over a label, I was writing. Book after book after book.
A writer is someone who writes. Not someone who talks about writing, but someone who actually sits down and puts words on paper. Talk is cheap. Work, now, that's something I can appreciate.