No, I brush my hair when I want to brush it. Y'know, when I was a sixth grader, I barely even used a brush. My hair was in so many tangles... It's not like that anymore though.
I do have obsessions and quirks like that, I mean OCD is the story of my life, but constant hair brushing isn't one of them. I do, however, count how many strokes I take on each portion of my hair so I can make sure that each portion has been brushed equally.