Blogging

I don't know if this happens to anyone else with a blog, but now that I have one I find myself thinking during various events of the day, "could I blog about this?" I also wonder how often I should be writing. Then I wonder what exactly I should be putting on my blog. Should I keep it to random thoughts I have or should it be more like a journal? I have come to the ultimate conclusion that this is my blog so I can do whatever I want. I'm learning a lot.