Backup your data right now. It may happen, that tomorrow your laptop doesn’t boot and this night of work will be lost.

What an easy thing – zip and save 2nd copy of data elsewhere. I know it, I have had server crash last Tuesday and lost all my work from previous night. So why I worked last night? May be better to sleep more. No. Better – to create a backup.

Add backup job to scheduler, CRON, etc. Write, google ask friends for a script. Don’t wait for disaster.