['I recently had to go to my old High School. And as soon as I walked in I started thinking back to my teen years.', 'Very cool, was it for a high school reunion?  Hopefully it brought up good memories!', 'The memories were good. I was invited by the football coach to talk to the football team.']
Awesome!  Hopefully you gave them the motivation they needed for the new year!
I recently drove past my old high school and had a nostalgic feeling. I started thinking back to when I was a teenager and memories of my old friends.