Trouble starting? Narrow scope

I've been struggling to blog every day somewhat because I forget, but largely because I have too broad a scope of things I could talk about and no defined audience or scope for my blog.

I assume that pretty much every college, or even high school, grad has heard about narrowing scope in a writing class. Having no set topics is leaving me awash in ideas for terrible blog posts, posts that would basically be an unemotional recitation of facts. Unless I feel otherwise drawn to a topic, I'm going to try to blog about consciousness traps this month - consciousness traps like starting too broad.