egotistical

Egotistical means thinking only about yourself and your own needs, often at the expense of others.

When people talk about someone being egotistical, they usually mean that this person is obsessed with their own achievements, talents, or possessions. They might brag a lot, expect special treatment, or think they're better than everyone else. You might hear someone say, "John's always talking about his new job and how he's the best at what he does - it sounds like he's become really egotistical."