Staring at the flames from something burning on the stove is doing something. Turning off the heat and protecting your hand while dumping the pan in the sink is getting something done.
Another scenario: Watching TV is doing something. Turning it off to clean the garage of the stuff you mean to give to Goodwill is getting something done.
Do you see it yet?
It's an old military axiom. "
Never mistake doing something for getting something done." Behind this short, pithy sentence is a whole mindset that can do wonders for providing clarity and peace of mind.
How can a
cliche give you clarity and peace of mind?
Getting something done implies that:
a) that action was taken to take you closer to a pre-established goal
b) that action was a deliberate choice, the best one among a set of alternates.