After a series of previous employers I ended up burned out (but sort of wasn't sure if I was or not). I couldn't quite pin down WHAT it was that was burned out

After a series of previous employers I ended up burned out (but sort of wasn't sure if I was or not). I couldn't quite pin down WHAT it was that was burned out of me until I saw this quote from the linked article: "Flow state is that state of focus and productivity that you attain when you’re feeling inspired and motivated." ...which makes perfect sense as two of the worst-offenders were places where I was expected to put out lots of code requiring flow-state, while simultaneously being immediately and constantly available to instant messages and email-used-like-instant messaging. The scary part is, the ability to focus and produce like I could the first years I was programming never came back. Now, I'm working at a place and in a role where my employers seem happy with what I'm doing, but I'm not happy with the rate I (can't) produce at.