Self-restrained, yet consumed by anger (9)
I believe the answer is:
temperate
'self-restrained' is the definition.
(I've seen this in another clue)
'consumed by anger' is the wordplay.
'consumed' becomes 'ate' (to eat is to consume food).
'by' means one lot of letters go next to another.
'anger' becomes 'temper' (temper is a kind of anger).
'ate' put after 'temper' is 'TEMPERATE'.
'yet' is the link.
(Other definitions for temperate that I've seen before include "pleasant" , "Controlled" , "Calm" , "Abstemious" , "Showing moderation" .)