I go in and start, somehow (10)
I believe the answer is:
instigator
'i go in and start somehow' is the definition.
I can't judge whether this defines the answer.
'i go in and start somehow' is the wordplay.
'and' says to put letters next to each other (I've seen this in other clues).
'somehow' indicates an anagram.
'go'+'in'='goin'
'goin' put after 'start' is 'startgoin'.
'startgoin' is an anagram of 'nstigator'.
'i'+'nstigator'='INSTIGATOR'
(Other definitions for instigator that I've seen before include "Stirrer" , "One who initiates (something)" , "One setting off" , "prime mover" , "He incites" .)