when something of your self interest benefits the society.
No, "self-interest" is typically not hyphenated.
Rational self-interest implies that
The National Interest was created in 1985.
examples of Enlightened self-interest
wages and salaries, income of self employed, rental incomes, & interest on savings and investments
In Defense of the National Interest was created in 1951.
Council for the National Interest was created in 1989.
self interest and fear
decisions arrived at based on self-interest or impluses
That Britain only did so out of self-interest
People act in their own self interest, meaning that all they think about is themselves.