Automatic Backup
If you really want the peace of mind of being absolutely certain that you will never lose anything that is on your computer, you are going to want to backup online. And the coolest part about it is that most online backup companies offer a service where, once you upload all the files that are currently on your computer, you never have to worry about remembering to back up again. The way this works is that the software that the backup company gives you automatically remembers to update all files that have newly created or indeed changed in any way. This way your system resources are only used for backing up when it is totally necessary, and you know that you are always protected.