With luck, apt to stick? (5)
I believe the answer is:
jammy
'with luck apt' is the definition.
I can't tell whether this definition defines the answer.
'stick?' is the wordplay.
I cannot quite understand how this works, but
'stick?' could be 'jam' (I've seen this in other clues) and 'jam' is found within the answer.
The remaining letters 'my' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'to' is the link.
Can you help me to learn more?
(Other definitions for jammy that I've seen before include "Lucky - as conserve" , "Lucky (informal)" , "Lucky (and sticky?)" , "Fortunate; sticky?" .)