I have lost my self.这里的have如何解释?

I have lost my self.这里的have如何解释? For you,I have lost self I lost my self I have lost my interested ( ) physics. Time (Have I Lost My Mind?) 歌词 i must have lost my key~ I have lost my new English dictionary I have never lost my heart i have lost my heart for you? May I have your camera.这里的have如何理解 I have a secure self --- I have found my lost book.So I feel ---.