Run with difficulty? (6)
I believe the answer is:
manage
'run' is the definition.
(run can mean to manage or be in charge of)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for manage that I've seen before include "Handle, cope with" , "Run (eg, company)" , "Run (a football team)" , "Organise" , "Take control" .)