Similarly, selfishness in a similar sense is generally a good thing. Not only is proper selfishness good, and improper selfishness bad, but selfishness in general is good. People have awareness that they have wants, that they lack something which they need for their well-being. Their self-interest requires that they act, that they do something. They are acting for themselves and in that sense are selfish.
Selfishness generally motivates people to act.
In that sense , selfishness must be a good thing.