Care (10)
'care' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for solicitude that I've seen before include "Care, concern" , "Feeling of excessive concern" .)
(Other definitions for self that I've seen before include "Will the writer?" , "Person's distinct identity" , "Will perhaps" , "A person's awareness of their own identity" , "One's individuality" .)