Lures into trouble and one's lad is ruined (5,2)
I believe the answer is:
leads on
'lures' is the definition.
(leading on is a kind of luring)
'one's lad is ruined' is the wordplay.
'is ruined' indicates an anagram.
'ones'+'lad'='oneslad'
'oneslad' with letters rearranged gives 'LEADS ON'.
'into trouble and' acts as a link.
This may not be right. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for leads on that I've seen before include "Lures (into trouble)" , "How unruly dogs need to be taken" , "regularly taking tricks" .)