Collocations for self-interest - noun

enlightened, rational
economic, material
individual, national
naked, pure
narrow

be motivated by
pursue your own

act in self-interest, act out of self-interest (esp. BrE)
in your own self-interest
Directors may be tempted to act in their own self-interest.

the pursuit of self-interest
the theory that the pursuit of self-interest is the best way to help society as a whole