Volatile Stan harbours good and bad feeling (5)

I believe the answer is:

angst

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'bad feeling' is the definition.
'Angst' can be an answer for 'feeling' (Angst is an example). I am unsure of the 'bad' bit.

'volatile stan harbours good' is the wordplay.
'volatile' indicates anagramming the letters.
'harbours' indicates putting letters inside.
'good' becomes 'g' (abbreviation).
'stan' anagrammed gives 'anst'.
'anst' going around 'g' is 'ANGST'.

'and' acts as a link.

Can you help me to learn more?

(Other definitions for angst that I've seen before include "Acute but unspecified feeling of worry" , "Stang (anag)" , "Strong feeling of anxiety/dread" , "Great anxiety" , "uneasiness" .)

I've seen this clue in The Telegraph.

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