A whole collection here from Dave Pollard. Particularly like the first two.
Generalists / consultants shouldn’t worry (feel guilty / stressed) about not getting things done, it’s not the point of their work – the point is to figure out and pass that information along to someone who can do something with it. In fact delivering less is better. Doing is about learning, not about delivering.
Stress wastes / causes a lack of time, not the other way around. Time pressure is not a cause of stress, but the result.
Too easy “excuses” ? Well yes if your aim is excuses, but worth thinking about anyway.