I think if you just left out the "I'm really busy right now" that text would be better received. Because it's not really true, it kinda sounds like you have an intense job, so if you're being honest, you're always busy, not just "right now." I think the point of this article is that everyone has their own level of…

Sometimes you work for a law firm and they drop something on your desk at 4pm...and they need it by the next day. And then you have to work until 2am, possibly with a brief break to cry in the bathroom. If you could get it done by 6pm, you would, but it's a 12 hour job that you desperately want to get done in 10 hours…