I've been involved in software development and delivery for 20 years, and after reading Steve McConnell's Code Complete and Rapid Development I saw the light and wanted to explore better ways of working. I had short flirtations with Evo Delivery and DSDM before picking up XP in late 2001. A few years later and a different environment meant that Scrum was a better fit and I decided that I'm an Agile practitioner with no desire to work any other way. I've since learned Lean, Kanban, DAD and now LeSS.
I'm a CSM, CSP. CSPO, SAFe SA, and now LeSS Practitioner.