This is also one of this things that I have mention a lot. Regardless people don’t listen. I have wrote about it, even dedicate a whole chapter to it in my book 25 Tips for Productivity.
The problem with backups is that you never had really that time to do it manually. You will always do it tomorrow. The problem is that tomorrow never comes. Suddenly everything is lost.
If you use an iOS device, backup to iCloud. If you are a Mac user, buy a time Machine. If you are a PC user, there are countless options on software. Look for one online, doesn’t matter. You need to have a solution for backups.
On Stephen Hackett’s book “Bartending: Memoirs of an Apple Genius” there is a story of a mother that lost all the pictures of her children that had died on a car accident a few years before. The story had a happy finish (after a really expensive process to save those pictures) but a simply backup would had save so much suffering to that person.
If you don’t know how, please contact someone. Pay someone. Ask for help. So something, but don’t loose information for lack of backup.