We think happiness, quality of life, and strengths are being overlooked by many practitioners. Did you know that parents report their child's happiness as the #1, most important way to assess if treatment is working? But many professionals simply don’t include happiness, quality of life, or well-being assessment in programs. We find many students and colleagues are approaching programming from a deficit model, and leaving out strengths, fun, joy, and optimism. We will share professional and personal advice for supporting happy, successful children and families through ABA programming. We will discuss existing interdisciplinary research, curricula, and strategies for measuring happiness, making ‘treatment' more enjoyable, building relationships with clients, and creating programs that build on strengths. And, we explain a little bit of neuroscience science behind why professionals often inadvertently increase anxiety and make intervention unpleasant – and what to do about it. Most importantly, we share the surprising good news that spending time on happiness and stress reduction, for clients and YOU, can facilitate learning, skill development, and cooperation overall.