Step 1. Backup your MySQL database
Backup your WordPress database on the MySQL database.
Step 2. Backup your files
Backup your files via FTP. Make sure to back up your MySQL database backup file in /_db_backups folder, too.
Make sure to compress all the files into a single archive file before transferring via FTP.
tar -zcvf godaddy_wp_bk.tar.gz html/
Step 3. Practice restoring
Run a backup and try restoring before you have important contents on your WordPress website to make sure you can successfully restore.
tar -zxvf godaddy_wp_bk.tar.gz
Step 4. Create backup of the backup
You might want to have a backup of the backup in case something happens to your original backup files.