The first thing on your checklist this summer: cut your hair. The second thing on your checklist this summer: get in shape. The third thing on your checklist this summer: read some books. You’ve been thinking about cutting your hair for a while. Namely, this type of thought comes into your head when you’re about to turn the BIG ONE. You thought it was time you stopped trying to look like your students…trying to have long hair when all it looked was like a hot mess most of the time. It did nothing for you, so you decide to perk yourself up with a little bob. You pinned about 500…