Positive psychology is considered the science of optimal functioning (Green & Palmer, 2018; Linley, Joseph, Harrington, & Wood, 2006) and it aims to understand how we can best support capacities for growth, social-functioning and well-being (Nafstd, 2015). Similarly, coaching is situated as an example of applied positive psychology (Green & Palmer, 2018; Linley & Harrington, 2005) and shares the humanistic assumptions that individuals have innate strengths, resources and desire for growth and development (Joseph & Bryant-Jefferies, 2019; Spence, 2007; Stober, 2006). At its’ core, coaching is about facilitating optimal functioning (Green & Palmer, 2019). Yet, there is little consensus regarding effective coaching models used to train and educate aspiring coaches (Cook, in press). To address this issue, a model known as The Funnel of Optimal Functioning [FOF; (Cook, in press)] was created and is now being used to help teach and embed coaching skills into clinical practice. In the past two years, over 2500 clinicians have used the FOF as a framework to guide their dialogue and understanding of client behaviours and to operationalize humanistic principles through coaching. The model is founded on principles and theory of optimal functioning, as well as the neuroscience and neurobiology of language. In this Practice presentation, the presenters will offer a detailed description of the model and associated training, including the significant results from clinical program evaluations – that have not yet been published -  which illustrate how the FOF has influenced their coaching knowledge, skills and success with regard to optimal functioning.