The Stoic Exercise deemed most useful, averaging a 4.3 star rating (out of five) is
The Retrospective Evening Meditation
This is the description from the Stoic Booklet (p. 13)
Mentally review the whole of the preceding day three times from beginning to end,
and even the days before if necessary.
1.1. What done amiss? Ask yourself what mistakes you made and condemn (not yourself
but) what actions you did badly; do so in a moderate and rational manner.
1.2. What done? Ask yourself what virtue, i.e., what strength or wisdom you showed,
and sincerely praise yourself for what you did well.
1.3. What left undone? Ask yourself what could be done better, i.e., what you should do
instead next time if a similar situation occurs.
This exercise also proved to be the most popular of the Stoic exercises in the booklet. Why not try it tonight?