My rule of thumb is if I haven’t been bored at least a little bit for a full week, I probably have a problem.

I like being busy. If I am approaching 100% busy for a significant amount of time though I am not doing my job, because I should be able to meet my commitments and handle one major unexpected event at any given time, minimum.

If I can go a week without at least having a bit of an itch that things are slow and boring, then either I am fighting too many unexpected fires, or I gave myself too full a plate, and both of those things are problems.