A review of 138 studies and nearly 20,000 participants is clear: people who regularly track their progress, whether steps, spending or workouts, reach their goals more often. The effect is stronger when progress is written down or shared with others. What gets measured is more likely to get done.
Remembering is not replaying a recording — it is rebuilding. Each time you recall a memory, it becomes temporarily malleable and can be altered before being stored again. That is why two people can sincerely remember the same event… differently.
In 2003, Johnson and Goldstein compared European countries. Where you must tick a box to become a donor, consent rates ranged from 4% to 28%. Where you're a donor by default unless you opt out, they topped 85%. People aren't more generous on one side; most simply stick with whatever option was chosen for them.