How do you know if a guy has an intention to work on himself?

My boyfriend is short tempered and sometimes fights by getting defensive... but once the problem or situation comes to end.. and he has time to think he realises and becomes self aware and accepts he was way out of his line and accepts he became defensive because of his insecurity or any other reason... i really appreciate him being honest abouy his feelings with me... but does this self awarness means he will work on himself amd changes tbose behaviour or he just accepts it and he might not look to change those... how do u get to understand that from observing them

How do you know if a guy has an intention to work on himself?
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