Be a pilot, IT-guy or an engineer...
At the end of the day when you go to bed to get some sleep, if you are thinking about tomorrow and feel excited; just want to get up as soon as possible to get back to your work, then that is what
I would call "working".
But if you go to sleep and never want to get up and go to work tomorrow, that is what
I would call "earning".
A wise guy once said:
"When you are young you give up on your health to earn good, as you get older you give up on your earnings to live good."
And that just explains my thoughts; you can't get anything without giving up on something...
my 2 cents...