When I was 23, I used to be totally comfortable cranking out Javascript UIs like there was no tomorrow. These days I'm approaching 33 and I can barely force myself to look at code for more than 20 seconds without mentally panicking. I don't know how I got here. I think it's a combination of many things, such as 1) a demanding family life 2) web development getting more complex in general 3) more stressful work environment 4) physical discomfort like RSI getting worse 5) just getting older & brain getting foggier. I don't think learning in my off hours is an option because my day job is so mentally draining. It takes all of my brainpower just to work from 9 to 5, and then I have nothing left over after that. I am talking to my manager about reducing my responsibilities but really I've been feeling this way for over a year, just trying to hang in there. But it's only getting worse as the months go by.