Great tips to follow it...
When I was managing developers (before source control)  I occasionally had a disasters where work was lost.  A programmer might have spent a week working on something, and for some reason all that work has gone. They were beside themselves with grief.  And they knew it would take another week to re-do all the work. 
Except it didn't.
Usually it took a day, to redo the work. And often the re-done version was cleaner and better.