Определение full of oneself в Английский Язык Английский Язык словарь
Egotistical, believing oneself to be superior to others; preoccupied with one's own work, interests, point of view, etc
I thought it not amiss to write him a line to let him know the regard you had for him, for as I know him to be vastly vain and full of himself I thought this might be a spur to his zeale.