As someone who has been programming for 40 years and had a decently successful career but is struggling with these challenges now, I can empathize. It's not so

As someone who has been programming for 40 years and had a decently successful career but is struggling with these challenges now, I can empathize. It's not so much what the challenge is -- it's how one is asked to accomplish it. Sitting in front of my laptop for 6 hours while people ask me random programming tasks while they watch me on camera and see every keystroke on screen while I'm editing is not how I work. I work by choosing from active tasks that fit the "space" I'm in, by multi-tasking, etc. - if I get stuck on something in the "real world" I'll go work on something else that needs to get done, etc. You'd be amazed at how many interviewers simply refuse to ask you another question in lieu of or even in addition to the one the first wanted to ask, for example.