In a tizzy myself about, or a state (5)
I believe the answer is:
maine
'a state' is the definition.
(Maine is an example)
'in a tizzy myself about' is the wordplay.
'tizzy' indicates an anagram.
'myself' becomes 'me' (**).
'about' means one lot of letters goes inside another.
'in'+'a'='ina'
'ina' with letters rearranged gives 'ain'.
'ain' put within 'me' is 'MAINE'.
'or' is the link.
(Other definitions for maine that I've seen before include "NE US state" , "Part of America" , "N. US Atlantic state" , "state of USA" , "North-easterly US state" .)