Reflectively pointing to imperatives like "normal or OK" when someone is having a moment of questioning imperatives that have got them this far is unhelpful. Why does it matter what's normal or OK? Maybe the thing that OP should be doing is something that's considered by many to be abnormal or not OK. If you want to convince OP that they should be working harder then fine. I'm not saying that's the wrong conclusion, but at least give a reason that's more useful than (a) other people are suffering therefore work (makes no sense) or (b) do what's normal or OK (why?) or even (c) you have a moral duty because you're being paid well (unconvincing as an argument and psychologically unmotivating).