In practice
A weekly review steps back from individual trades to look for patterns. Traders check their results in R, count the trades that broke the rules, and study the best and worst trades of the week.
Ending with a single change keeps it practical: one thing to stop or to start next week, so improvement is steady and can be measured.
What to watch for
Reviewing only the money hides what matters. A profitable week full of broken rules is a warning, and trying to fix five things at once usually fixes none.