My DP has done one of those “how much of a narcissist are you?” quizzes and came out at about the same level as a celebrity! Think his score was in the 30s, by contrast mine was 9!
He is genuinely a lovely bloke but my god he thinks highly of himself, he cannot empathise with others if they feel differently to him, he is very much of the opinion that he’s better than most other people and is jealous of those he deems more successful etc.
His favourite phrase when he’s not getting what he wants is “don’t they know who I am?!” which is said in jest, but has undertones of “many a true word..”
Luckily he sees this in himself and he is in therapy - he has made some really helpful changes but he will always be one of those people with high confidence (or at least who presents himself with high confidence even when he’s not feeling it).
Accepting that and also recognising when he behaves badly due to shame (when he is caught out not having done something he said he would or criticised in any way, he flies off the handle easily, especially at work, which is something he’s working on at therapy).
Being able to see the wounded child inside him, who is desperate to show how special he is and to be loved, helps me to accept him for who he is. That sounds patronising, but actually as well as being an alpha male and narcissist he’s also quite needy as apparently most narcissists are, so he likes having me affirm that he is loved even at his least loveable. I’ve found this the easiest and quickest way to bring him ‘back’ if he’s having a moment!