I am not a very strong public speaker. Let me rephrase that. The thought of standing in front of a group of people and speaking makes my gut churn. I fear saying something stupid and embarrassing myself. So when my son’s teacher asked me to talk to his class about blogging, I died just a little inside and then agreed. You can imagine how my anxiety level rose when, a few days later,  he pushed back the talk time by 30 minutes – so I’d be talking right after they spent 45 minutes in the gym on bouncy castles (as a reading reward).  He assured me that he would calm…