Of course, the answer is yes.
What should I write about?
I could easily write a "how to" book of advice for indie artists/musicians.
However, the two things I feel like I could write now are totally random.
One is a book about how to be frugal/save money. Hmm, I may not be the poster child for this but I feel like I could do a good job by observing what other people waste money on.
The other topic is motivational/self help.
Anyhow, I'll let these ideas stew.