I'm 46. I spend a lot of time working on side projects and courses, and thinking about the future of my industry (video games). Every 5 years or so I've made a

I'm 46. I spend a lot of time working on side projects and courses, and thinking about the future of my industry (video games). Every 5 years or so I've made a major shift in my area of expertise (from graphics and performance, AI and gameplay, to servers and databases) and from structured C, OO C++ to functional Scala and Clojure. As soon as my job becomes routine to me or something you can buy from a 3rd party I know it's time to do something else. So far I've gone 23 years and never had a hard time finding a job. I have worked in some environments with lots of young people and my age was an issue but I quickly moved on. I work with a guy ten years my senior who is the same as me, constantly updating his skills, and has no problem finding work.