Now some people will go without saying that saving is important in editing, and yes there is an auto-save.
And you do want your auto-save set as it will save your ass some time because of a random crash, but more important is to get yourself saving as much as possible.
It has become such second nature to me that I just hit command-S all the time, in fact when moving to Final Cut Pro X, I kept dinging the computer as there is no save, it is just supposed to save every time you make a change, but I am so ingrained to save that I kept trying to do it anyway (and it isn’t like final cuts lack of a save has always worked for me, as I have crashed and lost quite a bit of work in Final Cut Pro X as well).
And sometimes saves can take a while, especially fi the project is huge, but it is always worth saving as much as possible because otherwise you will crash and lose something, and you never want to do that.
So remember to save all the time and often, don’t let it fall to the auto save.