I retired 4 yrs ago at age 56. Always loved detailing (or at least I thought I was detailing) but wanted to learn more. Internet searches brought me to Junkman and Darrien and I watched their videos. My search also lead me to AG and I became product fixated and wanted to learn more. I knew I'd eventually do it as a business (small, part time) so I wanted to test my interest and skills so I attended Mike Phillip's detail boot camp 3 yrs ago. Learned a ton about products, tools, processes and met some great folks (Flex team, other detailers and enthusiast, Mike, Nick, etc). But what I really got was assurance that I knew what I was doing and had the passion to do the work and be good at it. I like a lot of folks initially kept researching, thinking, looking at videos, rethinking, talking...but not acting. Finally said go for it, printed up cards, got my pricing, put up a website and started talking myself up on Facebook, subdivision newsletters, neighboring newsletters, etc. Great service and work gets folks talking about you. So yes, I did it. If it weren't for another business venture, I'd open a shop and teach a select few what I've learned. As a few have mentioned, it is physically demanding work so things like rest, hydration, pacing yourself, knowing your body and limits all come into play. But if it's in you with passion coupled with the willingness to keep learning, nothing can stop you.