The best way to test a program is to test it.
"I am the author of my story. I decide the plot, the characters, and the ending."
"Every story is a lie, but within that lie, there is a truth waiting to be discovered."
Fairy tales are more than true: not because they tell us that dragons exist, but because they tell us that dragons can be beaten.
Be a pro. Back up your back up. Have at least one physical backup and one backup in the cloud. Have more than one of each. How much would you pay to retrieve all your data, photos, notes, if you lost them? Backups are cheap compared to regrets.