No one who describes themselves any way is actually that thing
“I’m a good guy” = I reacted to a girl who didn’t want a second date by calling her an ugly bitch and to go kill herself. That’s just a randomly plucked example by the way I’ve not done that, though I did tell a girl who decided to get back with her ex that her artwork was shit (although said out of spite, it genuinely was fucking terrible).
“I’ve got a great sense of humour” = I signed an online petition to get a comedian who’s joke I found offensive to be sacked from whatever gig they were on
And so forth
I can describe myself as tall because that’s just an irrefutable fact. But in terms of personality characteristics I’ll leave it to other people to make up their minds