So many to choose from but a defining moment in my development at 10yrs old was moving from Scotland to England and being moved up a year at secondary as I aced the entry exams.
10yr old me thought that was brilliant as I’d finish school a year sooner. The reality was that I missed about 6 months of real education and it changed my perspective on the world completely.
I still turned out alright but made some poor choices in my teens and twenties that I might have avoided if I’d stayed interested in academia. Or I might have stayed a soft lad and been an utter ****!