I have to follow the others, being fidgety (7)
I believe the answer is:
restive
'being fidgety' is the definition.
('restive' can be a synonym of 'fidgety')
'i have to follow the others' is the wordplay.
'i have' becomes 'I've' (contraction of 'I have').
'to follow' says to put letters next to each other (some letters go after or follow others).
'the others' becomes 'rest' (eg the rest of a group).
'ive' after 'rest' is 'RESTIVE'.
(Other definitions for restive that I've seen before include "Resisting control, nervous or impatient" , "Unsettled" , "It veers around, resisting control" , "Unable to stay still" , "Impatient - jumpy" .)