Positive Computing involves the utilisation of digital technology to foster psychological wellbeing and human potential. We will present an overview of Positive Computing and what it implies for multimodal systems for public speaking. The position of this paper is that a Positive Computing approach can make such systems more effective and improve user experience. We will focus on three of the tenets of Positive Computing viz. awareness, autonomy and stress-reduction. We will discuss different existing multimodal systems for public speaking within the context of Positive Computing.