Inspired by others, teach self-control (9)
I believe the answer is:
restraint
'self-control' is the definition.
(I've seen this before)
'inspired by others teach' is the wordplay.
'inspired by' means one lot of letters goes inside another (some letters breathed in or 'inspired' by others).
'others' becomes 'rest' (I've seen this in another clue).
'teach' becomes 'train' (training is a kind of teaching).
'rest' going around 'train' is 'RESTRAINT'.
(Other definitions for restraint that I've seen before include "Self-control" , "controlling influence" , "Control, restriction, curtailment" , "Limiting device" , "Reserve" .)