You were committed to what you were talking about and so absorbed in the moment you lost all self-consciousness. (Para. 5)
Meaning: You were giving all your attention to what you were saying and you were so interested in it that you lost all your worries and embarrassments about what you looked like, how you behaved and what others thought of you.
adj. 一心一意的;被吸收的 v. 吸收;使全神贯注(