Soon enough exhausted, pleasure-seeking (3,2,4,4)
I believe the answer is:
all in good time
'soon enough' is the definition.
(I've seen this before)
'exhausted pleasure-seeking' is the wordplay.
'exhausted' becomes 'allin' (I've seen this before).
'pleasure-seeking' becomes 'goodtime' (I've seen this before).
'allin'+'goodtime'='ALL IN GOOD TIME'
(Other definitions for all in good time that I've seen before include "No need to rush" , "Please be patient!" , "No sooner than is appropriate" , "Soon enough" , "In due course" .)