Accomplished youth takes directions, having too much to carry (9)
I believe the answer is:
overladen
'having too much to carry' is the definition.
'accomplished youth takes directions' is the wordplay.
'accomplished' becomes 'over' (I've seen this before**).
'youth' becomes 'lad' (I've seen this before).
'takes' says to put letters next to each other.
'directions' becomes 'en' (I've seen this in other clues).
'over'+'lad'+'en'='OVERLADEN'
(Other definitions for overladen that I've seen before include "Loaded beyond capacity" , "Groaning" , "Evidently stuffed" , "carrying too much" , "having trouble with his gear?" .)