For instance nothing here suggests oneself (3)
I believe the answer is:
ego
'oneself' is the definition.
(I've seen this in another clue)
'for instance nothing here' is the wordplay.
I cannot really understand how this works, but
'nothing' could be 'o' (looks like zero - 0) and 'o' is located in the answer.
'for instance' could be 'eg' (short for 'exempli gratia', 'for example' in Latin) and 'eg' is present in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
'suggests' acts as a link.
Can you help me to learn more?
(Other definitions for ego that I've seen before include "Selfishness" , "(Self-assertive) personality" , "Morale" , "Person's sense of self" , "Inflated pride" .)