Concerned only with one's personal welfare (7)
I believe the answer is:
selfish
'concerned only with one's personal welfare' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for selfish that I've seen before include "Concerned chiefly with one's own interests" , "Concerned only with oneself" , "Egotistical" , "Concerned only with no. 1" , "Self-seeking" .)