1. Key circumstances (where, when, etc.);
2. What may have been the actual trigger;
3. How intensely I am experiencing stress and in what way.

But if I see that I am being overwhelmed by stress (including being tired), I immediately go rest. The context gets written down at the first opportunity afterward or during recovery, with a note that the entry was made after X amount of time.
Due to the risk of distorting the perception of past experiences to one degree or another.