set a single goal, and set out to achieve it.
there is a set number things that may interfere with the attainment of this goal and it only makes sense to set these things aside.
of the many things that may prove distracting, there should be a set of things which one cannot resist, and these temptations we shall call vices.
in the setting of vices, we should pre-set ourselves to focus again on our single goal.
and reset everything in relation.
such as, if one should be completing one's notes on parasitology and mycology, one shouldn't beset with writing on sits and sets while sitting and idling away the hours of the day.
then, it is set - this is just a distraction.