Describe a character who is constantly seeking validation and approval from others, but never feels satisfied with the recognition they receive

Describe a character who is constantly seeking validation and approval from others, but never feels satisfied with the recognition they receive. This character craves attention and affirmation, going to great lengths to impress those around them, but always feels a deep sense of inadequacy and insecurity despite their efforts. Their constant need for external validation impacts their relationships and leaves them feeling unfulfilled and unhappy.