Mishap caused by stress: I'd go into it (8)
I believe the answer is:
accident
'mishap' is the definition.
(I've seen this before)
'stress i'd go into it' is the wordplay.
I cannot quite see how this works, but
'i'd' could be 'id' and 'id' is located in the answer.
'stress' could be 'accent' (accent can mean to emphasise or stress) and 'accent' is present in the leftover letters.
No letters remain.
This explanation may well be incorrect...
'caused by' is the link.
Can you help me to learn more?
(Other definitions for accident that I've seen before include "Contretemps" , "Chance occurrence." , "Fortune" , "disaster" , "Unforeseen mishap" .)