If you haven't already it is a good idea to start a journal, knowing that this may be new to some, and that the purpose of this journal may be different than "dear diary" here are a few best practices from the enforcement world when taking notes.

The seven "rules":
1)Write notes in chronological order.
2)Draw a diagonal line through any page or portion of a page that is not used and initial the line.
3)Write the date & time at the top of each entry or in the margin.
4)Indicate the conclusion of an entry by a single line drawn across the page and initial or sign.
5)Write in pen
6)If a detail is later recalled (i.e., hours or days after) that should have been included in the original notes, prepare a fresh notation in the notebook and cross-reference it to the original notes.
7)Use professional language at all times unless quoting someone

Characteristics of Good Notes (LUCCAS):
Legible
Understandable
Complete
Concise
Accurate
Systematic

I hope this is of some help to you.

These are great suggestions. I also used this technique when I was documenting issues with an employee I was "managing out." HR was able to go through my notes and fully understand the situation.