Tips:

To develop your secret writing self:

1. Do exercises for writers instead of just reading them.
   
2. Stop talking about your writing, how hard it is, what you are doing, and your dreams. Instead, write.
   
3. Make a space in your life — a physical box house — where no one can enter. It can be as simple as a notebook you carry around, a special pen, a time of day.
   
4. Practice being quiet. Let other people talk. Listen like you did when you were a kid, and you openly stared and absorbed everything. Be quiet. Leave some room in yourself for words to reverberate.

From Heather Sellers' Page After Page.