It's an interesting question, because it attempts to describe a state of mind.

I rarely encounter true boredom anymore, because like so many here, I've purposefully cultivated many areas of interest over time, and very rarely feel as if I reach that point. I simply switch intellectual channels, or physically do something else.

Listening to music while completing menial tasks helps. So does setting up little time trials in your head; as in, "I bet I can finish this lot by 2:30", etc. I've broken-up long periods of time with little 'reward breaks', especially if I've accomplished more than I had planned, and that helps keep boredom at bay.

When I am feeling well enough to tackle big projects, there is no such thing as enough time to feel bored.

I could see it happening in a situation that is not under our control; like in a long meeting, or having an entire evening with no stimulating conversations. I've been there---and yes, it's excruciating.

I think you really nailed it, Aurelius 710: Boredom | Psychology Today Canada