Rush to find a vocation (6)
I believe the answer is:
career
I believe this is a double definition.
'rush' is the first definition.
(career can mean to run or move out of control)
'a vocation' is the second definition.
(vocation can mean a career or line of work)
'to find' acts as a link.
(Other definitions for career that I've seen before include "Business course through life" , "Whole of employment" , "Run headlong at high speed" , "Progression through working life" , "Gallop" .)