Set a Calendar Reminder Before Any Free Trial Ends

Companies offer free trials because they know most people will forget to cancel. The business model literally depends on your forgetfulness. You sign up with good intentions to evaluate the product, and 14 days later an unexpected charge appears on your card.

The fix takes ten seconds: every time you start a free trial, immediately open your calendar and set a reminder for two days before it expires. Not on the last day — two days before, so you have time to decide. This one habit protects you from every "free" trial that was never meant to stay free.