If you think about it, it'll take more than a second.

Let's say we all clear our utensils after eating, will there be a drop in employment?
or.
we throw every can or tissue in the bin after we use, will there be less roadsweepers?
Maybe,
we all cook our own food, is there still a need for a canteen, or a hawker centre?
so,
our laziness gives someone else an opportunity to be useful?

Like a maid to do your household chores?

Well if you have someone who needs special attention then that is a different scenario.

what if we try these three things, will the world be better?? or worse??