The common man sacrifices the future for the moment.
The investor sacrifices the moment for the future
I liked it.
It's true that a common man can be easily tempted and spend all of his treasures just for a single moment of happiness. An investor will think intellectually and spend wisely for the betterment of his/her future.
So we consider ourselves as an Investor since we invest time so when the moment comes, it'll brighten up our future.