Because I am a freelance writer, one of the most difficult challenges of writing for me is balancing the time I spend on writing to get paid, writing for my nonprofit organizations, and writing "that book" I keep trying to write.
I need to earn income, so nonfiction writing takes up a large part of my week; I want to help my church and nonprofit groups, so that writing takes up another part of my week. Between that and the rest of my life, I have little time left to work on that book I want to write.
If you find yourself putting off that book you want to write, I highly recommend you join or form a critique group. You won't be disappointed!