People with self-belief go into extreme events (4)
I believe the answer is:
egos
'people with self-belief' is the definition.
I can't judge whether this defines the answer.
'go into extreme events' is the wordplay.
'into' is an insertion indicator.
'extreme' means to remove the middle letters.
'events' with its middle removed is 'es'.
'go' inserted inside 'es' is 'EGOS'.
Can you help me to learn more?
(Other definitions for egos that I've seen before include "feelings of self-importance" , "Self-images" , "Lots of self-esteem" , "People's personal pride - the parts of them that are conscious" .)