Find you can go no further than "Help yourself" (3,5,2)
I believe the answer is:
get stuck in
'find' is the definition.
Both the answer and definition are verbs in their base form.
Maybe you can see a link between them that I don't see?
'you can go no further than help yourself' is the wordplay.
I cannot quite see how this works, but
'you' could be 'u' (commonly used in online communication) and 'u' is located in the answer.
'go' could be 'get' (synonyms) and 'get' is found in the answer.
'no' could be 'n' (common abbreviation) and 'n' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Another definition for get stuck in that I've seen is " Concentrate on your work!".)